GFK-2415A March Type of sensor connection

Transcription

1 VersaMax IP Expansion Module has four analog differential inputs that can be configured as current or voltage inputs. It connects to a local bus that is interfaced to a Profibus-DP / PROFINET network by a Profibus Interface Unit (IC677PBI001) / PROFINET Interface Unit (IC677PNS001). The analog inputs are read synchronously to the bus cycle. Module Specifications Housing dimensions (width x height x depth) Type of sensor connection Operating temperature 70mm x 178mm x 49.3mm (2.756in. x 7.008in. x 1.941in.) 2- or 4-wire (shielded) -25 C to +60 C (-13 F to +131 F) Storage temperature Operating/storage humidity -25 C to +85 C (-13 F to +185 F) 95%. Slight condensation is permitted occasionally on the outer housing, for short periods. Degree of protection IP67 according to IEC Class of protection Class 3 according to VDE 0106, IEC Module Power Nominal Value 24VDC Features Three current measuring ranges: 0mA to 20mA, 4mA to 20mA, and +/-20mA Four voltage measuring ranges: 0V to +10V, +/-10V, 0V to +5V, +/-5V Sensor supply with integrated short-circuit and overload protection Communication via process data or PCP Independent channel configuration Measured values can be represented in two formats Resolution depends on representation format and range Diagnostic and status indicators IP67 protection Permissible Ripple Tolerance +/-25% Current Consumption Electrical Isolation Protection against polarity reversal Transients protection 1.2Vpp within the tolerance range 70mA typical To logic and I/O via DC/DC converter Via diode connected in series Yes Ordering Information VersaMax IP Module with 4 Analog s GFK-2307A or later VersaMax IP Installation Manual IC676ACC001 VersaMax IP Point Labels, quantity 50 IC676ACC002 Protective Caps. Male, for unused I/O connectors or outgoing bus and power connectors, qty 5 IC676ACC003 Protective Caps, Female, for unused incoming power connections, qty 5 1

2 Module Description Dimensions Internal Circuit Diagram Functional earth ground Optocoupler Power Supply with electrical isolation Analog/digital converter Amplifier Multiplexer Isolated area Electrical Isolation 2

3 Module LEDs D Green LED Diagnostics ON Flashing 0.5Hz Flashing 2Hz Flashing 4Hz Module is ready to operate Communications power present but bus not active Communications power present and bus active, I/O error Communications power present but transmission path or device to the left of the flashing device failed; devices to the right of the flashing device are not configured OFF Communications power not present and bus not active US Green LED Voltage supply for the inputs ON OFF Voltage supply present Voltage supply too low Red LED Voltage supply of the sensors is overloaded TR Green LED PCP Communications ON PCP is active OFF PCP not active XX Red LEDs Diagnostic Indicators ON Open circuit, measured values is overrange or underrange OFF Channel is OK Module Connectors Connector FE LB IN LB OUT U LS IN U LS OUT Function Functional earth ground Local bus In Local bus out Voltage supply in Voltage supply out for additional modules IN1 To IN4 s 1 to 4 Connection Example 3

4 Connection Guidelines The threaded sockets of the local bus (LB) and input connectors are assigned to the FE potential. They discharge electromagnetic interferences by conducting them to the FE connections. Meet Noise Immunity Requirements. Connect FE using a mounting screw, or (when mounting the module on a non-conductive surface), using a cable connection to the FE connection point. Ensure IP67 Protection. Cover the unused sockets with protective caps (IC676ACC002 and ACC003). Avoid Polarity Reversal of the supply voltages U L and U S. Local Bus Pin Assignments M12 B-encoded Pin Bus In Bus Out 1 DO DO 2 DO DO 3 DI DI 4 DI DI 5 GND GND The thread is used for shielding. Pin Assignment of the Voltage Supply Pin In Out 1 U L +24V U L +24V 2 U S GND U S GND 3 U L GND U L GND 4 U S +24V U S +24V The transmission speed is switched at the Bus Interface Module kbaud / 2 MBaud 500 kbaud / 2 MBaud Pin Assignment of the s The thread should be used for shielding. Pin Socket 1 US +24V GND 4-5 FE 4

5 Typical Connection of Analog Current and Voltage Sensors Passive pressure sensor configured as a current input Passive 2-wire transmitter configured as a current input The jumper can be located in the connector. For 4-wire inputs, the jumper can be located in the sensor. Passive voltage divider configured as voltage input Make sure the voltages U DIFF and U CM do not exceed the specified range. Active 3-wire transmitter configured as voltage input The jumper can also be set at the sensor, by conducting the signal from pin 4 to the sensor. 5

6 Module Data and Configuration The module can be configured using its process data, or via PCP communications. If the module is configured using PCP, it can no longer be configured using the process data. Data formats are shown in this section. Program Data ID number Length code Process data channel address area Output address area Parameter channel (PCP) Register length (bus) DF hex (223 dec) 05 hex 5 words 5 words 5 words 1 word 6 words Overview of the Module s and Output Data The module uses five input and output data words and one PCP word. A basic diagram of the module s output and input data words is shown below: The first output word (received from the host) is the control word. The meaning of the following output words depends on the value contained in the first output word. As confirmation of a control word action, the module returns a partial copy of the control word in the first input word (sent to the host). For device configuration, each output word can contain configuration data for a specific output channel. After the configuration is finished, depending on the format, the measured values for each channel are returned in the corresponding input data words sent by the module to the host. 6

7 Output Data Format The first Output Word received from the host should have the following format: The value in byte 0 is the command being sent to the module: Bit 15 to Bit 8 Hexadecimal Value of Output Word 1 Commanded Function hex Read Analog Word [ ch ] 1x00 hex Read Configuration of [ ch(annel) ]: 0 0 = channel = channel = channel = channel C00 hex Read Device firmware version and ID number from the input data word hex Configure the Module using the data in Output Words 2-5. See below hex Configure the Module using the data in Output Words 2-5 and read the analog values in Words 2-5. If the Control Word is set to 4000 hex or 5000 hex as explained above, the host must set Output Words 2 5 with the configuration parameters for each input channel, using this format: 7

8 The values shown in bold below are the defaults. Bit Assignment Binary Description 9, 8 Filter 00 Average of 16 measured values 01 No average value 10 Average of 4 measured values 11 Average of 8 measured values 5, 4 Format 00 Signed, 15-bit resolution 01, 10 Not used 11 Standardized representation 3-0 Measuring Range (Voltage) Measuring Range (Current) V to 10V 0001 ±10V V to 5V V mA to 20mA 1001 ±20mA mA to 20mA 1011 to 1111 Reserved 8

9 Data Words The module returns five words of input data to the host. The first input word has the following format: If Bit 15, the Error bit, is set to 1, an error has occurred. Additional bits in the input word identify the error type and the channel where the error occurred. In the case of a power supply error (bit 3 = 0), all of the channel bits are set. Error Bits in Word 1 Error Type Meaning 7 Faulty analog supply The module s internal analog voltage +/-5V and +/-15V supplies are out of range. 6 Faulty sensor supply The module s internal sensor supply U ANA is missing. Short circuit or overload. 5 Faulty configuration Configuration executed incorrectly. 4 Faulty sensor Sensor out of range or open circuit. Bits 0 to 3 indicate the faulty channel. If bits 14 to 8 in Word 1 contain a mirror of the command code (see previous page), bit 15, the Error bit, is suppressed. The contents of Words 2 to 5 depend on the command that has been received from the host in the Output Word. If Output Word 1 contains the value 1x00 hex, the configuration of the selected channel is indicated in the Word. If Output Word 1 contains the value 4000 hex, (Configure Module), the Words mirror the configuration data. If Output Word 1 contains the value 3C00 hex (Read Firmware Version and Device ID), those values are returned in Words 2 to 5. For example: 9

10 When Output Word 1 contains the values 0000 hex (Read Analog Data) or 5000 hex (Configure and Read Analog), the Words return the analog input data. The format of this data depends on the configured format, which can be either Signed 15-Bit, or Standardized. For both formats, the measured value is represented in bits 14 to 0. An additional bit (bit 15) is available as a sign bit. Default Data Format Sign Analog Value Standardized Representation Data Format In this format, the measured data is standardized to represent the corresponding value without conversion. One bit has the value of 1 mv or 1 µa. (depending on which module terminals are used) Sign Channel Error Codes In both formats, values greater than 8000H indicate an error. Analog Value Hex Error 8001 Over range 8002 Open circuit 8004 Measured value invalid 8010 Channel configuration invalid 8020 Sensor and/or analog power supply missing 8040 Module defective 8080 Under range 10

11 Significant Measured Values in Default Data Format Data Word (Two s Complement) 0mA to 20mA 0V to 5V 0V to 10V Measuring Ranges -20mA to +20mA -5V to +5V -10V to +10V 4mA to 20mA Hex Decimal ma V ma V ma 8001 Over > > > > > range 7F µA µV µV µA µV µV to <0 <0 < FFFF µA µV µV 8002 Open circuit <+3.2 8AD Under range < < < Significant Measured Values in Standardized Representation Format In Standardized Representation format, one bit has the value of 1 mv or 1 µa. Not all of the possible codes are used. Data Word (Two s Complement) 0mA to 20mA 0V to 5V 0V to 10V Measuring Ranges -20mA to +20mA -5V to +5V -10V to +10V 4mA to 20mA Hex Decimal ma V ma V ma 8001 overrange > > > > > > > AA E BB E A < < < to 3.2 FFFF B1E AB D8F D5AB Under < < < range 8002 Open circuit <

12 PCP Communications This VersaMax IP Analog Expansion Module can optionally use PCP communications for configuration and data transfer with an appropriate host. The module s PCP communications characteristics are described here. Details of using PCP communications are provided in the documentation for the host. Object Dictionary of the VersaMax IP Index ( hex) Data Type Number of Elements Length (bytes) Meaning Object Name Access Permitted 0080 Array of unsigned Configuration Table Read/write 0081 Array of unsigned Analog values read Configuration Table Object The Configuration Table object can be used to configure the module. If this is done, the module can no longer be configured using the process output data, as described previously. Configuration Table Object Description Object Config Table Access Read, write Data Type Array of unsigned 16 6 x 2 bytes Index 0080 hex Subindex 00 hex Write all elements 01 hex Configuration channel 1 02 hex Configuration channel 2 03 hex Configuration channel 3 04 hex, Configuration channel 4 05 hex, 06 hex Reserved Length (byte) 0C hex Subindex 00 hex 02 hex Subindex 01 hex to 06 hex Data Device Configuration For each Configuration channel, the element structure is: Values for these parameters were described earlier in this document. If an invalid configuration is specified, a negative configuration is generated via error message 08 hex, 00 hex, or xx30 hex. The least significant byte of the additional error code is 30 hex (value out of range), the most significant byte contains the number of relevant elements. For example: Config Table is completely filled with data (subindex 00) and the entry for channel 2 is invalid. In this case, the additional error code is 0230 hex. 12

13 Analog Values Object The Analog Values object contains the analog input data, as described previously. Analog Values Object Description Object Analog Values Access Read Data Type Array of unsigned 16 4 x 2 bytes Index 0081 hex Subindex 00 hex Read all elements 01 hex Analog value channel 1 02 hex Analog value channel 2 03 hex Analog value channel 3 04 hex Configuration channel 4 Length (byte) 08 hex Subindex 00 hex 02 hex Subindex 01 hex to 04 hex Data Analog values of the channels 13

14 Technical Data Local Bus Interface Transmission speed, incoming and outgoing Shield connection, incoming and outgoing 500 Kbaud / 2 Mbaud Direct to FE Sensor Supply Voltage Nominal value U S 24VDC Nominal value U ANA U S - 1V Permissible ripple 3.6Vpp within the permissible voltage tolerance Voltage tolerance +/-25% Current consumption 5mA typical, and sensor current 400mA maximum Overload Protection Electronic Short-circuit protection Electronic Analog s Number 4 differential inputs Voltage Ranges 0 to 10V, +/-10V, 0 to 5V, +/-5V Current Ranges 0 to 20mA, +/-20mA, 4 to 20mA Digital filtering (mean value None or over 4, 16, or 32 measured values. Default = 16. generation) Conversion time of the A/D converter Approximately 10µs Process data update of the channels Limit frequency (-3 db) of the input filter resistance Approximately 2ms 250Hz Voltage s: > 200kΩ Open Circuit behavior Voltage : Goes to 0V Current : Goes to 0mA Maximum permissible voltage Voltage inputs to analog ground: ±100V Permissible current, maximum Current inputs and analog reference potential: ±11V Current : ±50mA. Only partly overload-protected. Mechanical Requirements Vibration test Sinusoidal vibrations according to EN Shock test according to EN g load in each direction 30g load, half sinusoidal wave positive and negative in each direction 14

15 Tolerance and Temperature Response Error at 25 C (77 F) Voltage s 0 to 5V, +/-5V Voltage s 0 to 10V, +/-10V Current s Typical Maximum Typical Maximum Typical Maximum Relative ±0.03% ±0.10% ±0.03% ±0.10% ±0.05% ±0.20% Absolute ±1.67mV ±5mV ±2.67mV ±10mV ±10µA ±40µA Error at 25 C to +60 C (-13 F to +140 F) Relative ±0.16% ±0.30% ±0.03% ±0.10% ±0.28% ±0.40% Absolute ±8mV ±15mV ±16mV ±30mV ±56µA ±80µA Additional Tolerances Influenced by Electromagnetic Fields Type of electromagnetic interference Electromagnetic fields; field strength 10V/m according to IEC Conducted interference Class 3 (test voltage 10V) according to IEC Fast transients 4kV supply, 2kV input according to IEC Typical deviation of the measuring range final value (voltage input) Relative Typical deviation of the measuring range final value (current input) Relative < ±0.5% < ±0.5% < ±0.5% < ±0.5% < ±0.25% < ±0.25% Safety Devices Surge voltage Suppressor diodes in the analog inputs Isolation, Test Distance 24V supply (bus logic) / FE 24V supply (bus logic) / analog inputs 24V supply (bus logic) / incoming remote bus, outgoing remote bus 24V supply (bus logic) / 24V supply (sensors) 24V supply (sensors) / FE 24V supply (sensors) / analog inputs 24V supply (sensors) / incoming, outgoing remote bus Incoming, outgoing remote bus / FE Incoming, outgoing remote bus / analog inputs Analog inputs / FE Test Voltage 15