Ex-i NAMUR Isolation Amplifier, With Intrinsically Safe Input and Active Transistor Output, Two-Channel INTERFACE Data Sheet 0943_00_en PHOENIX CONTACT - /007 Description The PI-EX-ME-NAM/TO-A is a two-channel isolation amplifier. It is designed to operate proximity switches according to DIN EN 60947-5-6 as well as switch contacts with open circuit and resistance circuit. The signals from the Ex area are transmitted to the control system located within the safe area via an active transistor output. The module itself is installed in the safe area and only the sensor cable is led into the hazardous area (zone 0, zone, zone, zone 0, zone or zone ). The PI-EX-ME-NAM/TO-A features line fault detection (LFD) for each channel, which can be switched on/off depending on the application. If a line fault is detected or a supply voltage failure occurs, the module switches to the OFF state, i.e., 0 V on the output side. A switch is used to switch each channel between normal and inverse mode.. Properties Two-channel Input for NAMUR proximity sensor or switch, [EEx ia] IIC PNP transistor output (active) 0 V DC... 30 V DC supply -way electrical isolation Option of phase reversal Line fault detection (LFD) The device is an associated item of equipment and must not be installed in potentially explosive areas. When installing and operating the device, the applicable safety directives (including national safety directives), accident prevention regulations, as well as general technical regulations, must be observed. Observe the safety regulations and installation notes on page 5. Make sure you always use the latest documentation. It can be downloaded at www.download.phoenixcontact.com. A conversion table is available on the Internet at www.download.phoenixcontact.com/general/7000_en_00.pdf. This data sheet is valid for all products listed on the following page:
Table of Contents Description... Ordering Data... 3 Technical Data... 4 Safety Regulations and Installation Notes... 5 5 Structure... 7 6 Basic Circuit Diagram... 7 7 Configuration... 7 8 Installation... 8 9 Comparison of Safety Data... 8 Ordering Data NAMUR Isolation Amplifier Description Type Order No. Pcs./Pck. Ex-i NAMUR isolation amplifier, with intrinsically safe input, active transistor output, two-channel PI-EX-ME-NAM/TO-A 835778 Accessories Description Type Order No. Pcs./Pck. Loop wire jumper, 50-pos., can be separated, maximum jumpering distance of 60 mm, for jumpering identical inputs and outputs, 0.5 mm², insulation: Black Blue Gray DB 50-90 BK DB 50-90 BU DB 50-90 GY 8096 880 8099 For additional accessories, please refer to the "INTERFACE" catalog from Phoenix Contact. 3 Technical Data Input Control circuit Intrinsically safe Available input sources NAMUR proximity switches according to EN 60947-5-6 Switch contacts with open circuit Switch contacts with resistance circuit (series resistance kω ±0%, parallel resistance 0 kω ±0%) Control Circuit Non-load voltage Switching points Blocking Conductive Line fault detection 8.5 V DC <.55 ma >.75 ma Can be disabled by jumpering X - X or X5 - X6 0943_00_en PHOENIX CONTACT
Output Switching output Transistor output, PNP, active Configurable/programmable Switching behavior can be inverted via switch on the front of the housing (see "Configuration" on page 7) Voltage for switching output 4 V DC (internal) Switching current 00 ma, maximum (short-circuit-proof) Transmission Behavior Switching behavior Switching frequency Can be inverted via switch on the front of the housing 00 Hz, maximum Connection Data Conductor cross-section Solid (minimum/maximum) Stranded (minimum/maximum) AWG/kcmil (minimum/maximum) Stripping length Thread Connection method Tightening torque 0. mm /.5 mm 0. mm /.5 mm 4/4 8 mm M3 Plug-in screw connection 0.5 Nm, minimum/0.6 Nm, maximum General Data Supply voltage range 0 V DC... 30 V DC Current consumption < 45 ma (4 V DC) Power consumption 0.5 W (per channel) Number of channels Electrical isolation (input/output) 375 V (peak value according to EN 5000) Electrical isolation (input/supply) 375 V (peak value according to EN 5000) Test voltage (input/output).5 kv AC, 50 Hz, minute Housing material Polyamide PA, not reinforced Color Green Degree of protection IP0 Width x length x height.5 mm x 99 mm x 4.5 mm Inflammability class according to UL 94 V0 Design Terminal block housing for mounting on DIN rails Connection method Plug-in screw terminal blocks NAMUR recommendation NE Climatic Data Ambient temperature (operation) Ambient temperature (storage/transport) Permissible humidity (operation) -0 C 60 C -5 C 80 C < 75% (annual average) < 95% (30 days/year, no condensation) Indicators Status indicator Green LED (supply voltage) Yellow LED (switching state) Red LED (line fault) EC Conformance EMC directive 89/336/EEC Ex directive (ATEX) Yes Yes 0943_00_en PHOENIX CONTACT 3
Safety Data According to ATEX for Intrinsically Safe Circuits Maximum output voltage U o Maximum output current I o Maximum output power P o Gas group Maximum external inductance L o Maximum external capacitance C o U m 0.5 V 6 ma 67 mw 53 V AC IIB 60 mh 6.8 μf IIC 45 mh.4 μf Approvals CE Yes ATEX X II () GD [EEx ia] IIC, TÜV 00 ATEX 57 UL/CUL U C.D. No. 00-T47 0943_00_en PHOENIX CONTACT 4
4 Safety Regulations and Installation Notes 4. Installation and Operation Follow the installation instructions. NOTE: Installation, operation, and maintenance may only be carried out by qualified specialist personnel. When installing and operating the device, the applicable safety directives (including national safety directives), accident prevention regulations, as well as general technical regulations, must be observed. NOTE: The circuits inside the device must not be accessed. Do not repair the device yourself, replace it with an equivalent device. Repairs may only be carried out by the manufacturer. NOTE: The device must not be subject to mechanical strain and/or thermal loads, which exceed the limits described in these operating instructions. NOTE: The device is only designed to meet IP0 protection in a clean and dry environment. In order to provide protection against mechanical or electrical damage, install the device in corresponding housing with a suitable degree of protection according to IEC 6059. Where dust is present, install the device in suitable housing with at least IP5x protection. 4. Safety Regulations for Installation in Potentially Explosive Areas The device is an associated item of equipment and must not be installed in potentially explosive areas. Regulations for Intrinsically Safe Circuits When carrying out measurements on the intrinsically safe side, observe the relevant regulations regarding the connection of intrinsically safe equipment. Only use devices approved for use in intrinsically safe circuits. If the device has been used in non-intrinsically safe circuits, it must not be used again in intrinsically safe circuits. The module must be clearly labeled as non-intrinsically safe. For the safety data, please refer to the operating instructions and certificates (EC-type examination, other approvals, if necessary). Installation in Areas With a Danger of Dust Explosions The device is not designed for use in areas with a danger of dust explosions. Connection to the intrinsically safe circuit in areas with a danger of dust explosions (zone 0,, and ) is only permitted if the equipment connected to this circuit is approved for this zone (e.g., category D, D or 3D). 0943_00_en PHOENIX CONTACT 5
4.3 UL/CUL Approval 0943_00_en PHOENIX CONTACT 6
- 5 V 6 7 3 9 - PI-EX-ME-NAM/TO-A 5 Structure.5 6 Basic Circuit Diagram Ex area Safe area 6 5 3 4 5 6 7 8 - - CH 5 6 7 8 CH 3 4 POWER [EEx ia] IIC [EEx ib] IIC I II I II 9 0 CH CH PI-Ex-ME-NAM/TO-A APPROBATIONEN / APPROVALS U M68 LISTED 4 GELB YELLOW CH & ROT RED I<0.mA I R i I>6.0mA UV II REV YE 6 GELB YELLOW ROT RED I<0.mA I>6.0mA I V R i - U V & 99-3 4 5 6 PI-Ex-ME-NAM/TO-A Art.-Nr.: 8 35 77 8 CH POWER 3 4V DC GRÜN GREEN 5-5 INTERN GEBRÜCKT -5 CONNECTED INTERNALLY Suitable for Class I, Div., Groups A, B, C and D installation; providing intrinsically safe circuits for use in Class I, Div., Groups A, B, C and D; Class II, Groups E, F and G; and Class III Hazardous Locations. II REV 4.5 POWER - 3 4 5 6 9 0 CH I II I II - CH 5 6 7 - CH 3 CH POWER PI-Ex-ME-NAM/TO-A 3 4-5 6 7 3 - - 5 6 7 3 I<0.mA IV R i I>6.0mA U V I<0.mA I>6.0mA IV R i U V RD II REV RD II REV GN & & YE YE 4 9 6 CH CH 3 4VDC 5-7 Figure Structure Figure internally jumpered with 5 Basic circuit diagram with connection terminal blocks Switch for reversing the direction of operation: Switch in position I when contact is closed in the input circuit, activates the output Red LED, for indicating line fault detection: Line fault detection can only be activated if a proximity switch according to DIN EN 60947 or NAMUR or a mechanical contact with corresponding resistance circuit (see "Basic Circuit Diagram" on page 7) is connected. 3 Yellow LED, for indicating the switching state: LED is controlled parallel to the output. 4 Green LED, for indicating the power supply. 5 Plug-in terminal blocks (to release with a flat-bladed screwdriver, push out laterally). 6 Direction for removing the screw terminal blocks 7 Metal lock for fixing on the DIN rail 7 Configuration 7. Switching Function Table Input No error in the input circuit With error in the input circuit Sensor blocking, contact open Sensor conductive, contact closed Sensor blocking, contact open Sensor conductive, contact closed Line fault, short circuit or break Direction of operation Line fault detection Output Yellow LED (switching state) Red LED (line fault detection) Normal Any OFF OFF OFF Normal Any ON ON OFF Inverse Any ON ON OFF Inverse Any OFF OFF OFF Any ON OFF OFF ON Cable break Normal OFF OFF OFF OFF Cable break Inverse OFF ON ON OFF Short circuit Normal OFF ON ON OFF Short circuit Inverse OFF ON OFF OFF 0943_00_en PHOENIX CONTACT 7
7. Line Fault Detection NOTE: For mechanical contacts, line fault detection must be disabled (Figure 3) or the corresponding resistance circuit (Figure 4) must be provided directly at the contact (e.g., UKK 5-R/NAMUR (Order No. 9466) with D-UKK 3/5 (Order No. 77004)). 8 Installation The device should only be transported and stored in its original packaging. 8. Mounting () () (3) Figure 3 Line fault detection disabled.7 kω Figure 4 Switch contact with resistance circuit NOTE: Electrostatic discharge The device contains components that can be damaged or destroyed by electrostatic discharge. When handling the device, observe the necessary safety precautions against electrostatic discharge (ESD) according to EN 6340-5- and EN 6340-5-. If the device has been used in non-intrinsically safe circuits, it must not be used again in intrinsically safe circuits. The module must be clearly labeled as non-intrinsically safe. Mount the device on a 35 mm DIN rail according to EN 6075. The device is calibrated by default upon delivery. For this reason, subsequent calibration of the zero point and final value is not provided. Before startup, check that the isolation amplifier is operating and wired correctly, especially with regard to the wiring and labeling of the intrinsically safe circuits. () (3) 8. Connecting the Cables Plug-in screw terminal blocks; fit the litz wires with ferrules. Install intrinsically safe and non-intrinsically safe cables separately. Permissible cable cross-section: 0. mm to.5 mm. 8.3 Pre-Startup Checklist Before starting the device, make sure that the following conditions have been observed using the technical data: Checkpoint OK Operating conditions have been observed? Correct polarity has been selected for all connections? No impermissibly high voltage in the output circuits during startup? Output load corresponds to the permissible values according to "Output" on page 3? Output circuit grounded at no more than one location? All power supply values correct? 9 Comparison of Safety Data Safety data of: Compare the safety data before connecting a device located in the Ex-i area to the PI-EX-ME-NAM/TO-A. Field devices: Isolation amplifier: U i, I i, P i, L i, C i U o, I o, P o, L o, C o For the values for U o, I o, P o, L o, and C o, please refer to "Safety Data According to ATEX for Intrinsically Safe Circuits" on page 4. Ex-i Requirements: U i U o I i I o P i P o L i L c L o C i C c C o (L c and C c depend on the cables/lines used) 0943_00_en PHOENIX CONTACT GmbH & Co. KG 383 Blomberg Germany Phone: 49-5 35-30 0 8 PHOENIX CONTACT P.O.Box 400 Harrisburg PA 7-000 USA Phone: 77-944-300 www.phoenixcontact.com