janitza RCM 202-AB, Руководство пользователя и технические данные

Страница: 21 / 68

21
www.janitza.de RCM 202-AB
RCM 202-AB 21
Modbus (RS485 interface)
Pin Desig-
nation
Meaning
1 B+ D
+
/non-inverted signal
2 A– D
–
/inverted signal
3 Reference potential (GND)
Analog and digital output connection
1 AO1+ Analog output 1 (4 … 20 mA sink +)
2 AO1– Analog output 1 (4 … 20 mA sink -)
3 AO2+ Analog output 2 (4 … 20 mA sink +)
4 AO2– Analog output 2 (4 … 20 mA sink -)
5 - -
6 1 Common connection for both digital outputs
7 2 Digital output 1
8 3 Digital output 2
Current measurement transformer connection
1 I1 – K Current measurement transformer 1, contact k (wire color
1) : white)
2 I1 – L Current measurement transformer 1, contact l (wire color
1)
:
brown)
3 I2 – K Current measurement transformer 2, contact k (wire color
1) : white)
4 I2 – L Current measurement transformer 2, contact l (wire color
1) :
brown)
Power supply connection
1 N Supply voltage AC 90 ... 230 V (N)
2 L Supply voltage AC 90 ... 230 V (L)
Tab. 3: Connection assignment RCM 202-AB
Bus termination
TERM switch Switch position Resistance
On
(first and last bus
participant)
RH Resistance (120 Ω ) switched on
Off Left No resistance
Tab. 4: Bus termination via the TERM switch
1) for transformers with fixed connection cables with out contacts k and l