Endress+Hauser RMS 621 - Page 16

4 Electrical installation RMS 621
16 Endress+Hauser
Passive sensors
Connection of sensors that are powered using the loop power supply built into the unit.
Fig. 9: Connection of a passive sensor, e.g. to input 1 (Slot AI)
Pos. 1: Pulse signal
Pos. 2: PFM signal
Pos. 3: 2-wire transmitter (4-20 mA)
Pos. 4: Connection of a passive sensor, e.g. optional universal expansion card (Slot B I,
→ Fig. 13)
Temperature sensors
Connection for Pt100, Pt500 and Pt1000
!
Note!
Terminals 1 and 5 (3 and 7) must be linked when using 3-wire sensors (see Fig. 10).
Fig. 10: Connection of temperature sensors, e.g. to input 1 (Slot EI)
Pos. 1: 4-wire input
Pos. 2: 3-wire input
Pos. 3: 3-wire input, e.g. optional temperature expansion card, (Slot B I,
→ Fig. 13)
E+H specific instrumentation
Flow sensors with PFM output
!
Note!
Set the Prowirl flowmeter to PFM output
(Æ FU 20: ON, PF)