RMA ERMA - ERMA - Electronic GmbH

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4. Electrical connections 4.1. General instructions 4. Electrical connections It is forbidden to plug or unplug connectors with voltage applied Attach input and output wires to the connectors only without voltages applied Cords must be provided with sleeves Attention must be paid that the power supply voltage applied will agree with voltage noticed at the name plate. The instrument has no power-on switch, so it will be in operation as soon as the power is connected. 4.2. Hints against noisy environment All inputs and outputs are protected against noisy environment and high voltage spikes. Nevertheless the location should be selected to ensure that no capacitive or inductive interference can have an effect on the instrument or the connection lines. It is advisable: To use shielded cables. The wiring of shields and ground (0V) should be star-shaped. The distance to interference sources should be as long as possible. If necessary, protective screen or metal enclosures must be provided. Coils of relays must be supplied with filters. Parallel wiring of input signals and AC power lines should be avoided. 9 ERMA-Electronic GmbH
4.3. Connection and pin assignment All inputs and outputs are connectors, designed as plug-in screw terminals. Pin assignment: signal inputs analog output 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 RS485 4. Electrical connections digital inputs - + sensorsupply 9 10 11 12 13 14 15 alarm 1 alarm 2 1 RS 485, GND 16 2 RS 485, B (-) to Signal input SSI 3 RS 485, A (+) 23 4 GND of digital inputs 24 Option analog output 5 Digital user input 1 or option RS 232 interface 6 Digital user input 2 to or option Current-Loop, TTY interface 7 Accessory power supply output (-) or option two additional alarm outputs, 8 Accessory power supply output (+) 31 relays 9/10 Alarm (relay) output 1 11/12 Alarm (relay) output 2 13 Ground connection 14 Power supply L, DC (-) 15 Power supply N, DC (+) ERMA-Electronic GmbH 10 L N
Page 1 and 2: SSI 3001 Digital Panel Meter For Ab
Page 3 and 4: CONTENTS 1. Description . . . . . .
Page 5 and 6: 11.1. Electrical datas . . . . . .
Page 7 and 8: 2. Safety instructions This instrum
Page 9: 3.2.2. Housing for mosaic systems I
Page 13 and 14: 4.7. Connection of accessory power
Page 15 and 16: 5. Startup procedure 5. Startup pro
Page 17 and 18: 7. Modes 7. Modes The operation and
Page 19 and 20: 7.3. Programming level The state
Page 21 and 22: Leaving the programming level Press
Page 23 and 24: Param. Description Setting range 0-
Page 25 and 26: 8.4. Programming level of alarms P-
Page 27 and 28: 8.4.1. Alarm output functions Data
Page 29 and 30: 8.5. Programming level for analog o
Page 31 and 32: 8.6. Programming level of serial in
Page 33 and 34: 8.7. Programming quick reference 2
Page 35 and 36: 9. Software functions 9.1. Master/S
Page 37 and 38: 9. Software functions 9.3. Incremen
Page 39 and 40: 9.8. Main reset The main reset is p
Page 41 and 42: Isolation voltage : 500 V / 1 min A
Page 44: ERMA - Electronic GmbH Max-Eyth-Str

RMA ERMA - ERMA - Electronic GmbH

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