RMS621 Wiring
Endress+Hauser 19
4.2.4 Extension card connection
Fig. 13: Extension card with terminals
Terminal assignment of Universal extension card
Terminal assignment of temperature extension card
Terminal (item no..) Terminal assignment Slot Input and output
182 24 V sensor power supply 1 B, C, D top, front (B I, C
I, D I)
Current/PFM/pulse input 1
181 Sensor power supply ground 1
112 + 0/4 to 20 mA/PFM/pulse input 1
111 Ground for 0/4 to 20 mA/PFM/pulse input
183 24 V sensor power supply 2 B, C, D top, rear (B II, C
II, D II)
Current/PFM/pulse input 2
181 Sensor power supply ground 2
113 + 0/4 to 20 mA/PFM/pulse input 2
111 Ground for 0/4 to 20 mA/PFM/pulse input
142 Relay 1 Common (COM) B, C, D bottom, front (B
III, C III, D III)
Relay 1
143 Relay 1 normally open (NO)
152 Relay 2 Common (COM) Relay 2
153 Relay 2 normally open (NO)
131 + 0/4 to 20 mA/pulse output 1 B, C, D bottom, centre (B
IV, C IV, D IV)
Current/pulse output 1 active
132 - 0/4 to 20 mA/pulse output 1
133 + 0/4 to 20 mA/pulse output 2 Current/pulse output 2 active
134 - 0/4 to 20 mA/pulse output 2
135 + pulse output 3 (open collector) B, C, D bottom, rear (B V,
C V, D V)
Passive pulse output
136 - pulse output 3
137 + pulse output 4 (open collector) Passive pulse output
138 - pulse output 4
Terminal (item no..) Terminal assignment Slot Input and output
117 + RTD power supply 1 B, C, D top, front (B I, C
I, D I)
RTD input 1
116 + RTD sensor 1
115 - RTD sensor 1
114 - RTD power supply 1