CMA 56 H A R D W A R E Reference Manual

Transcription

1 CMA 56 H A R D W A R E Reference Manual

2 OMICRON Test Universe Article number VESD manual version: CMA56.AE.6 OMICRON electronics All rights reserved. The product information, specifications, and all technical data contained within this manual are not contractually binding. OMICRON reserves the right to make technical changes without announcement. OMICRON electronics is not to be held liable for statements and declarations given in this manual. The user is responsible for every application described in this manual. OMICRON electronics explicitly exonerates itself from all liability for mistakes in this manual. Copying or reproducing this manual, wholly or in part, is not permitted without the expressed written consent of OMICRON electronics. 2

3 Safety Instructions Safety Instructions ATTENTION: Before starting up the CMA 56, carefully read the following safety instructions. The system must not be put into operation without full knowledge of this information! The CMA 56 may only be operated by trained personnel on the company premises. 3

4 Current amplifier CMA 56 For your safety Operate the CMA 56 only with mains supplies with a protective grounding! When connecting to the 6mm socket use only test leads with 6mm connectors and plastic jacketing. Always push the plug in as far as it will go. Recommendation: use supplied 6mm plugs. With regard to the cross section and length of the test lead, take note to keep the impedance of the leads at a minimum. Recommendation: use test leads with a minimum cross section of 5 mm² and maximum length of 2 m. Do not leave any test leads exposed; always disconnect leads at the CMA 56 first! The CMA hardware and the CMC hardware should only be turned on or off (by the switch on the front panel), if no test device is connected. When connecting and disconnecting the test object make sure that the amplifier is not activated in the software (if the switch in the control software is "On", another automatic sequence will run, a program sequence or a transient output is active, or other signals are connected to the input on the rear panel of the CMA 56 ("Ampl. in")). Attention: if the CMA 56 is connected to "Gen. out 1-6" (CMC 56 with s/n <DExxxx: "ext. Ampl.") of a CMC 56 test device the internal current amplifiers of the CMC 56 also supply currents to the corresponding outputs of the CMC 56. 4

5 Safety Instructions Use correct fuse only: T10AH 250V. Do not insert conductive parts (screwdrivers etc.) into the sockets. Do not operate in a wet or humid environment (condensation). Do not operate if an explosion hazard exists. Do not operate if you suspect that a hardware fault exists. In this case, please contact OMICRON electronics. Take note of the important instructions for proper handling of the CMA 156 before starting it up (page 10). The device may only be opened at the manufacturer's factory - if irregularities occur, please send it to us. Voltages of up to 500 V will occur inside the unit! If the unit is opened, warranty claims will become void. If the mains fuse must be replaced (back panel of the device): First disconnect the mains plug of the CMC test device! Unscrew the little plastic tile and change the fuse. Fuse: T10AH 250V. 5

6 Current amplifier CMA 56 Table of Contents SAFETY INSTRUCTIONS... 3 TABLE OF CONTENTS INTRODUCTION START-UP SYSTEM COMPONENTS IMPORTANT INSTRUCTIONS SYSTEM START INSTRUCTIONS FOR CONTROL OF AMPLIFIERS THROUGH THE CMC DESIGN AND OPERATION MODULES Hardware Test Temperature Monitoring CONNECTIONS AND INTERFACES CONNECTORS ON THE FRONT PANEL mm Connector REAR VIEW Mains Fuse Interface to the CMC Test Device INCREASING THE OUTPUT POWER PARALLEL CONNECTION OF MORE CMAS SINGLE PHASE OPERATION SERIES CIRCUIT 1,2 (L-L) SINGLE PHASE OPERATION PARALLEL CONNECTION STATUS MESSAGES OVERLOAD TECHNICAL DATA MAINS SUPPLY OUTPUTS CURRENT 1, 2, INPUTS "AMPL. IN" AMBIENT CONDITIONS Climate Shock and Vibration Electromagnetic Compatibility (EMC) SAFETY MECHANICAL DATA

7 Table of Contents 8 APPENDIX ORDERING INFORMATION MANUFACTURER CONTACT INFORMATION INDEX

8 Current amplifier CMA 56 1 Introduction The CMA 56 can be controlled from the CMC test device. The current amplifier is housed in the same compact casing as the CMC 56 test device and supplies 3 50A. Control is effected via an input socket on the back of the device by means of analog signals from the CMC test device. Thus, control of the overall system by means of the easy to use software installed on the PC is retained. Using the CMA 56 auxiliary amplifier, the OMICRON test system is also able to test relays having higher requirements in terms of output power and currents, so that a wider range of test objects can be tested. 8

9 Start-Up 2 Start-Up 2.1 System Components Prior to the start-up please verify that all components have been delivered: o CMA 56 (amplifier) o CMA 56 User s manual o Accessories: Mains cable Connection cable CMA 56 CMC test device (l=1 m) optional: Connecting cable CMA 56 CMC test device for older CMC 56 test devices. 4 connection cables CMA Test object: (l=1m, =10mm, black, one end open, one end with a 6mm plug) Mains fuse: T10AH 250V Carrying bag 9

10 Current amplifier CMA Important Instructions Please take note of the following instructions for proper handling of the CMA 56 current amplifier: Note the safety instructions! Operate the CMA 156 only with mains supplies with a protective grounding! Operate the CMA 56 only with a CMC for DOS software version > The CMA hardware and the CMC hardware should only be turned on or off (by the switch on the front panel), if no test device is connected. When connecting and disconnecting the test object make sure that the amplifier is not activated in the software (if the switch in the control software is "On", another automatic sequence will run, a program sequence or a transient output is active, or other signals are connected to the input on the rear panel of the CMA 56 ("Ampl. in")). When the CMA 56 is used, make sure that an unobstructed air flow from the ventilation slots on the base panel to those on the rear panel is possible. 10

11 Start-Up For CMC 56 test devices with serial-no < DAxxxx: If the CMC test system is configured for its internal amplifiers: Do not connect the CMA 56 (with connected test object) to the CMC 56 or leave it connected! The control signals are always present at the Lemo connector at the rear of the CMC 56. When the internal amplifiers are configured, these signals are not calibrated and are therefore invalid. (For serial-no DAxxxx, the signals at the rear connector of the CMC 56 are suppressed if the internal amplifiers are used.) For the position of the sliding switch on the rear panel of the device see the instructions in section Please check that your OMICRON software shows the name and serial number of the CMA 56 (e.g. CMA 56 AJ123N). Instructions: If the amplifier is connected to the CMC test device through the interface "Gen. out 7-12", then the CMC reads this, and all other information about the amplifier, automatically through this interface. For older test devices this interface is not standard, only the "Gen. Out 1-6" (or "ext. Ampl.") interface. If the amplifier is connected to this interface, then the information about the amplifier must be read from an AMP-file. The AMP-file defines the most important parameters of an amplifier (name, current or voltage amplifier, amplification factor, etc.) and is described in Chapter 3 of the CMC DOS Software Handbook. 11

12 Current amplifier CMA System Start The following instructions can be followed step by step if the PC is properly installed and set up. For CMC for DOS software versions < 2.45: First install a software version The CMA 56 can only be operated with a CMC for DOS software version 2.45 or higher. The following procedure should be followed for interconnecting the system components: 1. Connect the CMC test device and the PC by means of the 25-pin connecting cable. 2. Connect the CMA 56 and the CMC test device by means of the supplied connecting cable. 1 CMA 56: socket "Ampl. in." at the back panel. CMC test device: Socket "Gen. out 1-6" (optional: "Gen. out 7-12") on the back panel Connect CMA 56, CMC test device and PC to the mains supply (cable supplied). 1 The supplied cable has the required electromagnetic compatibility. 2 For CMC 56 test devices with serial no less DExxxx: socket ext. Ampl. on the back panel. 12

13 Start-Up 4. Turn all devices ON. For CMC 56 test devices < DExxxx: always turn the CMC 56 test device ON before connecting the test object (power-on peak)! CMA 56: When the CMA 56 is started, an automatic hardware test is carried out; only after this self-test has been passed, the device turns itself ON. In case of malfunction, a new attempt is made every 8 sec. Notice: Steps 5 7 are not applicable from CMC for DOS V2.8 or OMICRON Windows software, because in this case the amplifier configuration will be done automatically (exception: CMC56 without Gen. Out 7-12 output). 5. After the PC has booted, copy the file xxxxxx.amp supplied on disc to your CMC directory. Example: C:\CMC>copy a:ab123z.amp This AMP-file is configured for your CMA. Delete the CMA standard file CMA.AMP. Example: C:\CMC>del CMA.AMP). 6. The program is started by typing: CMC [ ] Program start. When the program has completed initialization, you are in the main menu. 13

14 Current amplifier CMA Configuring the CMA 56 as external amplifier for the CMC test device: When the CMC test device is started up, the internal current amplifiers are always considered to be the active current amplifiers. To control the CMA 56 as amplifier, the device must be specified as the active amplifier in the CONFIGURATION menu. a) Select menu item Configuration in the main menu and enter the CONFIGURATION menu. b) Select menu item I-amplifier to enter the selection list of the available current amplifiers and select CMA 56 xxxxxx. c) Return to the main menu via menu item Quit. The following message will now appear: Ext. amplifier: I: CMA 56 xxxxxx. Now the CMA 56 is configured as an external amplifier for the CMC test device. 14

15 Start-Up 8. Connecting a test object CMA x I over 4 cables with 6mm plug Test Object supplied connection cable CMC CMA 56 3 x V over 4 cables with 4mm plug measurement lead Control section Voltage amplifier CMC Test Device Measurement section Figure 1 Connecting principle CMA 56, CMC test device and test object Connect the current rotary system of the CMA 56 to the test object. This may be effected via the individual outputs (1, 2, 3, N). If necessary, connect the voltage outputs of the CMC test device to the test object via four cables with 4mm connectors (these are supplied by the user). Connect the measuring section of the CMC test device to the test object either via cables with 4mm connectors or via the 20-pin measurement combination connector at the front panel of the CMC test device. This completes the startup procedure. 15

16 Current amplifier CMA Instructions for Control of Amplifiers through the CMC If your CMC has a "Gen. Out 7-12" Interface: If your amplifier is connected to this interface it will be automatically identified and offered as an option by the control software used, since communication is possible over this interface. (Supported by CMC for DOS since version 2.70.) This interface is standard on all CMC 156 test devices and can be added to CMC 56 test devices from serial number DAxxxx. See "Ordering Information" page 45. If your CMC has a "Gen. Out 1-6" interface: There is no communication between the CMC and the amplifier, so the amplifier must be defined by an AMP-file. If you use a CMC for DOS software version < 2.7: There is no communication between the CMC and the amplifier, so the amplifier must be defined by an AMP-file. Significance of the sliding switches: In the case of the amplifiers being controlled from the CMC for DOS software, the sliding switches indicate whether the current (Position II) or the voltage system (Position I) is to be amplified. In the case of control by a CM Engine based software (all OMICRON Windows programs are based on CM Engine) the setting of these sliding switches is ignored. 16

17 Start-Up 6 x I in the CMC for DOS software: The representation of 2 current systems in the CMC for DOS software is not supported at the time of printing of this manual - the software only displays one current and one voltage system. If 6 currents are to be controlled via the CMC test device, one of the two groups must be operated with the voltage rotary system of the CMC for DOS software. For this purpose, the appropriate AMP file must be set in the CMC for DOS software via the menu items Configuration and V-Amplifier. In the AMP file, enter Voltage for TYPE, 50 for MAX and 10 for AMPLF. The sliding-switch of the group to be controlled with the voltage system of the CMC for DOS software must be set to position I. For this group, volts will be displayed in the CMC for DOS software instead of amperes. (See AMPLIFIER 10 in the following example, with the instruction Sw.:I, that is sliding switch set to position I.) If you define your amplifiers with an AMP-file: An external amplifier can be defined for the CMC by an AMP-file (for older CMC 56s this is the only possibility). An AMP-file with the same name: If an amplifier definition in an AMP-file has the same name and serial number as one which has been automatically identified through the "Gen. Out 7-12" interface, then the information from the AMP-file will be ignored by the control software. 17

18 Current amplifier CMA 56 Example of an AMP-file: The following example shows an excerpt from a standard AMP-file which would be used with the CMC for DOS software. (An explanation of the format of the AMP-file may be found in Chapter 3 of the CMC for DOS Software Handbook.) BEGIN AMPLIFIER9 NAME CMA56 50A Sw. :II SERNO TYPE CURRENT MAX 50 AMPLF 10 PHOFFS 1.07, 1.07, 1.07,50 END AMPLIFIER9 BEGIN AMPLIFIER10 NAME CMA56 50A Sw. :I (6xI) SERNO TYPE VOLTAGE MAX 50 AMPLF 10 PHOFFS 1.07, 1.07, 1.07,50 END AMPLIFIER10 BEGIN AMPLIFIER11 NAME CMA56 CT5:1 10A Sw. :II SERNO TYPE CURRENT MAX 10 AMPLF 2 PHOFFS 1.07, 1.07, 1.07,50 END AMPLIFIER11 18

19 Start-Up BEGIN AMPLIFIER12 NAME CMA56 4x// 200A Sw. :II SERNO TYPE CURRENT MAX 200 AMPLF 40 PHOFFS 1.07, 1.07, 1.07,50 END AMPLIFIER12 19

20 Current amplifier CMA 56 3 Design and Operation 3.1 Modules The amplifier of the CMA 56 current amplifier is isolated from its controller (CMC test device) via an isolation amplifier. This isolation amplifier passes the received signals to a module for signal processing. The corrected signals (by signal processing) are then passed to the outputs 1-3 at the front panel via the three-phase amplifiers. A module for self-testing and monitoring carries a hardware test out when it is switched ON and continuously detects the internal temperature of the amplifier. This facility automatically switches the amplifier OFF in the case of overheating. Furthermore, this module is used to detect an overburden condition or overcurrent at the outputs of the CMA 56. The information about the current operating state of the CMA 56 is displayed via the LED display on the front panel. A communication interface is used to communicate with the controlling CMC. 20

21 Design and Operation Figure 2: Block diagram CMA 56 21

22 Current amplifier CMA 56 Explanation of the block diagram 1) 3-phase electronic switch : Used to select system I or II. The switch is controlled by the sliding switch at the rear panel of the CMA 56, where system I corresponds to the voltage system and system II corresponds to the current system of the CMC test device. 2) Isolation amplifier for isolation between the inputs and outputs (CMA 56 is isolated from the CMC test device and mains). 3) Signal processing block (filter, offset correction,...) 4) 3-phase current amplifier 5) Monitoring facilities: Hardware test upon switching the device ON. Temperature monitoring Operating state display Communication interface for the CMC test device 6) LEDs on the front panel for displaying the operating state 22

23 Design and Operation Hardware Test During power-up, the CMA 56 automatically carries out a hardware test; the device only turns itself ON when this self-test is passed. A new attempt is made every 8 seconds if a malfunction occurs Temperature Monitoring Dependent on the load and the current output, the internal power dissipation results in the heating up of the CMA 56. When the temperature threshold is reached, the temperature monitoring function automatically switches the device OFF. The LED display at the front panel flashes red/dark (0.5s / 0.5s). The time until the device is switched OFF due to overheating depends on the following factors: - the duty factor (ON/OFF time) of the output currents, - the load, - the ambient temperature, and - the temperature within the device due to previous tests. Typical data: At maximum load (3 x 50A rms ): ambient temperature = 25 C internal device temperature = 25 C outputs short circuited (max. power loss in CMA 56) unit switches itself OFF after approx. 4 min. For a typical application: Conditions as above and duty factor 1:2 (e.g. 5s ON / 10s OFF) unit will never switch OFF. After the unit switched itself OFF, the CMA 56 will "wait" until the temperature in the device has dropped under a threshold. This threshold is about 5 C below the switch-off threshold, i.e. the temperature monitoring function has a hysteresis behavior. 23

24 Current amplifier CMA 56 4 Connections and Interfaces 4.1 Connectors on the Front Panel The output sockets are situated on the front panel; three current phases and a neutral. In addition the LED indicators to display the operating states of the amplifiers and the ON/OFF power switch are here. Figure 3 Front view CMA 56 24

25 Connections and Interfaces mm Connector The test object is connected to the current phases by a 6mm connector, which is suitable for a maximum output current of 50A. Figure 4 6mm plug with clamping connection Ordering Notes for 6mm Connection Plugs Description KSTN/10F Order number Manufacturer Multi-Contact Table 1 Ordering notes for 6mm connection plugs 25

26 Current amplifier CMA 56 With the aid of a socket outlet adapter a lab cable (with 4mm banana plugs) can be used for I < 20A. Figure 5 Socket outlet adapter For measurement and testing this adapter has two 4mm unsprung sockets. For use as a branching point the adapter is equipped with two 6mm sockets. Ordering Notes for Socket Outlet Adapter Description AZ6/6-4F Order number Manufacturer Multi-Contact 26

27 Connections and Interfaces Multi-Contact Addresses USA Multi-Contact USA Head Office 5560 Skylane Boulevard Santa Rosa, CA Tel: +1 / 707 / Fax: +1 / 707 / CH Stammhaus: Multi-Contact AG Basel Stockbrunnenrain 8+12 CH-4123 Allschwil 1 Tel.: +41 / 61 / Fax: +41 / 61 / D Multi-Contact Deutschland GmbH Hegenheimerstr. 19 Postfach 1606 D Weil am Rhein Tel.: +49 / 7621 / Fax.: +49 / 7621 / F Multi-Contact France S.A. 4, rue de l'industrie Z.I. F Hésingue Tel.: +33 / 89 / Fax: +33 / 89 / If you would like to order from OMICRON, see section 8.1 Ordering Information. 27

28 Current amplifier CMA Rear View The mains connection (power supply block) and the connection to the CMC test device (detail b) are located on the rear panel. Figure 6 Rear view CMA Mains Fuse Attention: disconnect the mains cable of the device before replacing the mains fuse! Fuse: T10AH 250V. 28

29 Connections and Interfaces Interface to the CMC Test Device Figure 7 Detail b) of rear view CMA 56 29

30 Current amplifier CMA 56 Sliding Switch Relevant for use with the CMC for DOS software. Rotary System I... Voltage system in the DOS-Software. Rotary System II... Current system in the DOS-Software. CM Engine based software (all OMICRON Windows software) ignores the sliding switch. The position of this switch specifies which of the 3-phase systems of the CMC test device (current or voltage) is used to control the CMA 56. In position II, the signals of the current system of the CMC test device are taken as the signals to be amplified; in position I, the signals from the voltage system are amplified. Therefore, the sliding-switch is normally set to position II. Ampl. in The Lemo jack "Ampl. in" is used to connect the CMA 56 to the CMC test device (or to another source of analog signal to be amplified). Use the cable provided for connection to this socket. Amplification: 5V rms corresponds to 50A rms, isolated (Input/Output) (see also section Technical Data) Sliding switch setting: With the sliding switch, you select which rotary system (I or II) is used. (See also the block diagram in Figure 2) 30

31 Connections and Interfaces Figure 8 Plug for interface "Ampl. in" (upper 16-pole Lemo socket) (cable connection view) Socket Signal from CMC test device Function Pin 1 Gen. out 7 L1 rotary system II (input) Pin 2 Gen. out 8 L2 rotary system II (input) Pin 3 Gen. out 9 L3 rotary system II (input) Pin 4 GND_A GNDA Analog Ground Pin 5 Gen. out 10 L1 rotary system I (input) Pin 6 Gen. out 11 L2 rotary system I (input) Pin 7 Gen. out 12 L3 rotary system I (input) Pin 8-16 Reserved reserved Housing shield connection (ground) shield connection (ground) Table 2 Assignment 31

32 Current amplifier CMA 56 Ampl. out This interface serves for the connection of additional CMA 56, CMA 156 or CMS 156. The signals from "Ampl. in" for the CMA 56 are looped through to "Ampl. out" (electrically connected). Use the cable provided for connection to this socket. Figure 9 Plug for interface "Ampl. out" (lower, 16-pole Lemo socket) (cable connection view) Socket Signal from CMC test device Function Pin 1 Gen. out 7 L1 rotary system II (output) Pin 2 Gen. out 8 L2 rotary system II (output) Pin 3 Gen. out 9 L3 rotary system II (output) Pin 4 GND_A GNDA Analog Ground Pin 5 Gen. out 10 L1 rotary system I (output) Pin 6 Gen. out 11 L2 rotary system I (output) Pin 7 Gen. out 12 L3 rotary system I (output) Pin 8-16 reserved reserved Housing shield connection (ground) shield connection (ground) Table 3 Assignment 32

33 Connections and Interfaces Ordering Information for "Ampl. in" and "Ampl. out" Manufacturer Designation of Plug for "Ampl. Out" and "Ampl. In" For "Ampl. out": Plug with 2 guide cams and pull relief FGB.2B.316.CLAD 72Z For "Ampl in": Plug with 1 guide cam and pull relief FGG.2B.316.CLAD 72Z Bend protection spout black GMA.2B.070 DN Table 4 Manufacturer designation Manufacturer / Supplier of plug for "Ampl. Out" and "Ampl. In" USA LEMO USA Inc. 335 Tesconi Circle, Santa Rosa, CA 95406, Tel.: 001/707/ , Fax: 001/707/ D LEMOSA GmbH, Stahlgruberring 7, 8000 München 82 Tel. (089) FAX (089) Table 5 Manufacturers / Suppliers If you want to order from OMICRON, see section Error! Reference source not found. Ordering Information. 33

34 Current amplifier CMA 56 5 Increasing the Output Power 5.1 Parallel Connection of more CMAs Several CMA 56s may be connected in parallel with CMA 156s (max. 4 devices; 200A). "Gen. out 7-12" of the CMC test unit Optional: Gen. out 1-6 (CMC 56 s/n < DExxxx: "ext. Ampl.") ATTENTION: Ensure proper wiring! All slide-switches to position "II"! Ampl. in Ampl. out CMA 156 CMA 156 In parallel connect. Test object CMA 156 CMA 56 Figure 10 Parallel connection of 4 CMA current amplifiers for increasing power 34

35 Increasing the Output Power If, for a parallel connection, some CMA's are not used, the amplifiers not in use must stay in Power-ON condition or must be disconnected at "Ampl. in", otherwise the input signal gets distorted by the amplifiers in the power-off condition. 4 C M A parallel 1 C M A 56 Figure 11 Output power per CMA 56 phase and for parallel connection of 4 CMA amplifiers 35

36 Current amplifier CMA Single Phase Operation Series Circuit 1,2 (L-L) Maximum output voltage: Maximum power: Current range: 20V rms 280VA at 15A A rms If currents 1 and 2 of a CMA 56 are operated in phase opposition (180 ), the output power can be doubled. In order to maintain a valid overload display in this case, the outputs must be connected with low resistance. V 1 N V V R=100E/5W (recommended) N R R N * 1' N' Figure 12 Single phase operation; series circuit (L, L) See also the power curve in Figure 16. * The jumper is only used for suppressing the overload message of phase 3. 36

37 Increasing the Output Power 5.3 Single Phase Operation Parallel Connection Maximum output voltage: Maximum power: Current range: 10V rms 420VA at 45A A rms The currents 1, 2 and 3 will be connected in parallel and brought together at the load (burden). All current channels must be controlled in phase so that the currents will add up I 1 N I 2 N I 3 N I 1' N' N Figure 13 1' N' Single phase operation; parallel connection See also the power curve in Figure

38 Current amplifier CMA 56 6 Status Messages 6.1 OVERLOAD The status display consisting of three LEDs is used to display the operating states of the amplifier. Via different color- and flash-combinations the individual operating states can be displayed. LED Indicators Green Red Red/dark flashing (0.5s/0.5s) Red/dark flashing (1s/1s) Red/green flashing (0.5s/0.5s) Dark Meaning Normal operation; no overload, output not clipped Overload condition; the relevant phase is open circuited or is connected to a too high burden. If the output is open, even without any input signal, an overload indication might result due to the offset current. Temperature overload; the device has turned OFF due to overheating - and will turn itself back ON after the temperature has dropped below a threshold. Overcurrent at one of the outputs, caused by a too high input signal; approx. from 55 A rms output switching ON is attempted every 8 sec. Hardware fault in the device; switching ON is attempted every 8 sec. Amplifier is turned OFF Table 6 LED messages displayed on the front panel of the CMA 56 38

39 Technical Data 7 Technical Data Guaranteed values are valid over 1 year from the date of factory calibration, at 23 C ± 5 C over a frequency range DC Hz at nominal value and after a warm-up time greater than 25 min. 7.1 Mains Supply Mains Supply Connector Voltage, 1-phase Nominal voltage Permissible range Mains fuse Power consumption Frequency Nominal frequency Permissible range Table 7 Plug after IEC V AC V AC T10AH 250V < 1000VA 50 / 60Hz Hz Power supply details 39

40 Current amplifier CMA Outputs Current 1, 2, 3 3 Current Outputs 1 Output currents 3-phase AC A 1-phase AC (1+2+3) A 1-phase DC A Output power 3-phase AC 3 140VA at 15A; see page 42 1-phase AC (L-L) VA at 15A; see page 37 and p phase AC (1+2+3) W at 45A 1-phase DC (L-N) 1 280W at 21A Accuracy 4 typ. error < 0.03% guar. error < 0.1% Harmonic distortion 5 typ. < 0.1% guaranteed < 0.3% Bandwidth (-3dB) > 8kHz Phase lag at 50Hz / 60Hz 1.07 / 1.28 (output lagging) (autom. corrected by the CMC test device) DC offset current typ. < 10mA DC guaranteed < 30mA DC Short-circuit protection Open-circuit protection Short-circuit proof against N. Open outputs (idling) allowed. Table 8 Current Outputs 3 Current Outputs Frequency range Sine signals Transient signals Hz DC kHz Output current resolution 2mA Frequency resolution 5 µhz Frequency accuracy/drift 0.5ppm/1ppm Phase range Phase resolution Phase error 6 typ guaranteed < 0.1 Table 9 Current outputs, specifications valid only if the CMA 56 is controlled by a CMC test device 1 Information for three phase system valid under symmetrical conditions (0, 120, 240 ) 2 Parallel connection of all three phases 3 Single phase model: 2 currents in series. 4 Percentage refers to nominal current (50A). 5 Values at nominal current (50A), 50/60 Hz and 20 khz measuring band width. 6 Valid for sine signals with 50/60Hz. 40

41 Technical Data Figure 14 Typical output power of the CMA 56 per phase (L-N) 1 Figure 15 Output power curve for single phase operation 1 The given output power is valid for the output plugs, the maximum power at the load (burden) is reduced by the power loss of the connection cables. 41

42 Current amplifier CMA 56 Figure 16 Output power curve at 50/60Hz for single phase operation with parallel connection (1+2+3) Methods for increasing the output power are found in Chapter 5 "Increasing the Output Power". 7.3 Inputs "Ampl. in" 3 analog inputs Input resistance Input voltage range Amplification max. permissible input voltage Isolation input output Table 10 Inputs > 40k V 10A / 1V (1V at input 10A at output) 15V peak SELV (SaveExtraLowVoltage) 42

43 Technical Data 7.4 Ambient Conditions Climate Climate Temperature Operation Storage and transport Relative humidity Table 11 Climate F ( C) F ( C) 5 95% relative humidity; noncondensing Shock and Vibration Dynamics Vibration Shock Table 12 Shock and Vibration Tested according to IEC (operating mode) frequency range Hz; acceleration 2g continuous (20m/s 2 ); 10 sweeps, each axis Tested according to IEC (operating mode) 15g/11ms, half-sine, each axis Electromagnetic Compatibility (EMC) EMC CE Conformity Emission International Europe Susceptibility International Europe Table 13 The product complies to the normative document about electromagnetic compatibility for standardization of the laws of the member states of the council of the European Union (EMC standard 89/336/EWG). FCC Subpart B of Part 15 Class A EN 55011/3.1991/Group1/Class A IEC 801-2/3/4 EN :1992 Electromagnetic compatibility 43

44 Current amplifier CMA Safety Safety Standards and Certificates Complied with European standards EN :1993 International standards IEC UL CAN/CSA-C22.2 No Certificates UL, CUL E Table 14 Safety standards and certificates complied with 7.6 Mechanical Data Mechanical Data Weight Dimensions (W x H x D; without handle) Table 15 Mechanical data 32.6 lbs (14.90 kg) 17.7" 5.7" 15.4" (450, 145, 390 mm) 44

45 Appendix 8 Appendix 8.1 Ordering Information In this section you will find ordering information for accessories of the CMA 56. To identify the cables and plugs more easily they are represented graphically in the following diagram: 45

46 Current amplifier CMA 56 6mm connector CMA 56 Branching plug Connection cable CMC 156 amplifier Plug for socket "Ampl. in" Ampl. in Amplifier (CMA, CMS) Plug for socket "Ampl. out" Ampl. in Ampl. out ext. Interf. Connection cable CMC 156 amplifier Gen. out CMC 156 Figure 17 Connection cables and plugs 46

47 Appendix Ordering Specification Plugs Plug for 16-pole Lemo socket "Ampl. in" Plug for 16-pole Lemo socket "Ampl. out" 6mm connector, black branching plug, black Plug for Measuring Combination Socket Cable Connection cable for CMC 156 amplifier Exif Board option for CMC 56 Carrying bag CMA/CMS Transport case for CMA/CMS Additional Instruction Manuals for CMA 56 Table 16 Ordering Information Order Number VEHS0001 VEHS0002 VEHS0004 VEHS0005 VEHS0104 VEHK0003 VEHB0003 VEHP0010 VEHP0011 VESD

48 Current amplifier CMA Manufacturer Contact Information OMICRON electronics GmbH Oberes Ried Klaus Austria Phone: Fax: Website: support@omicron.at 48

49 Index 9 Index A Accessories Ordering Information Air flow Ambient conditions Ampl. in Plug assignment Ampl. In Ampl. Out Amplifier Configuration Assignment Ampl. in Interface to external amplifier Automatic switch off... 20, 23 B Blink combinations Block diagram Wiring up C Cable Length and cross section... 4 Ordering Information CAN/CSA-C22.2 No Changing the mains fuse... 5 Circuit diagram CMA Climate CMC for DOS Software version... 10, 12 Color combinations of the LEDs Communication with CMC Configuration of the CMA 56 as external amplifier Connection of a second CMA of the test objects Principle Connection Cable Ordering Information Cross section of the test cable... 4 Current amplifier Configuration...14 Current too high...20 D Delivery schedule... 9 Design of the system...12 Device test...20 Dimensions...44 E Electromagnetic Compatibility...43 Electronic switch... 22, 30 EMC...43 EN / Equipment grounding conductor... 4, 10 Error messages...38 European standards...44 External Amplifier Plug Assignment...32 F Frequency...39 Front view...24 Fuse... 5, 28 G Gen. out 7-12 Assignment...32 Ground leakage wire...10 Grounding conductor... 4, 10 Guaranteed values...39 H Hardware Fault

50 Current amplifier CMA 56 Test Heating of the hardware I IEC IEC IEC Important instructions Inputs and Outputs Ampl in... 30, 42 Ampl. out Isolation of Interconnection Block diagram of components Interface Assignment of Ampl. in International standards Isolation Input output Isolation amplifier... 20, 22 L LED indicators Possible operating states Lemo plug Assignment of plug to Ampl. in Length of the test cable... 4 Load too high M Mains Connection Supply Mains fuse... 5 Maintenance... 3 Manufacturers of plugs OMICRON Mechanical data Messages Modules Description Monitoring facilities Monitoring the device N Nominal frequency...39 O OMICRON Contact information...48 Opening the device... 5 Ordering information Plug Manufacturers...26 Ordering Information...45 Output current too high...20 Output power...41 Outputs...40 Overcurrent... 20, 38 Overheating... 20, 38 Overload...38 Display...38 P Plugs Manufacturers and suppliers...33 Ordering information...26 Ordering Information...45 Power Consumption...39 Dissipation...23 Supply...39 Principle Circuit Diagram CMA Problems Contact information...48 R Rear view CMA Rotary system switch... 22, 30 S Safety...44 Shock and Vibration...43 Signal processing...20 Sliding switch...30 Position of... 11, 22, 30 Software version... 10, 12 50

51 Index Standards Starting the system... 3, 12 Status messages Suppliers of plugs Supply Switch... 22, 30 Switching off the device System Components... 9 Design Start T Technical data Telling circuit Temperature Error Monitoring Threshold Test objects connection Testing the device Threshold U UL test...44 Use of the CMA V Ventilation slots...10 Version of CMC for DOS Software... 10, 12 Vibration and Shock...43 View Back of CMA Front of CMA W Warm up time...39 Warranty... 5 Wiring up Block diagram...15 the System