RMS621 Wiring
Endress+Hauser 13
4 Wiring
4.1 Quick wiring guide
Fig. 6: Slot assignment (basic unit)
Terminal assignment
Terminal (item no.) Terminal assignment Slot Input
10 + 0/4 to 20 mA/PFM/pulse input 1 A top, front (A I) Current/PFM/pulse input 1
11 Ground for 0/4 to 20 mA/PFM/pulse input
81 Sensor power supply ground 1
82 24 V sensor power supply 1
110 + 0/4 to 20 mA/PFM/pulse input 2 A top, rear (A II) Current/PFM/pulse input 2
11 Ground for 0/4 to 20 mA/PFM/pulse input
81 Sensor power supply ground 2
83 24 V sensor power supply 2
1 + RTD power supply 1 E top, front (E I) RTD input 1
2 - RTD power supply 1
5 + RTD sensor 1
6 - RTD sensor 1
3 + RTD power supply 2 E top, rear (E II) RTD input 2
4 - RTD power supply 2
7 + RTD sensor 2
8 - RTD sensor 2
Terminal (item no.) Terminal assignment Slot Output - interface
101 + RxTx 1 E bottom, front (E III) RS485
102 - RxTx 1
103 + RxTx 2 RS485 (optional)
104 - RxTx 2