RHEONIK RHE21, Installation & Start?Up Manual

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RHE21 Installation & Startup Guide – Doc. No. 8.2.1.04 – Ver. 1.31 6 / 58
3.2 Electrical Installation
Caution, the surface of the connection box may be hot if a hot fluid is running through
the RHM sensor.
Unused cable entries at the RHE21 have to be closed by suitable sealing plugs.
Electrical connections to the transmitter are made either with screw terminals or push-in
connectors. To connect or disconnect a wire to a push-in connector push down the cable release
operator while inserting or drawing out the wire.
Interconnecting RHE/RHM
Except for the RHE21 construction types E5 and H3 all RHE21 are delivered with an integrated
cable for connection with an RHM sensor. They can be directly connected to the RHM sensor
according to Tables 2 to 5.
The RHE21 construction types E5 and H3 have to be connected to an RHM sensor according to
Tables 2 to 5 using the bottom RHE21 terminal box. Only interconnecting cable (ARHE-Cx cable)
supplied by Rheonik should be used to connect an RHE to an RHM. Cable not supplied by
Rheonik may lead to a poor performance of the Coriolis mass flow meter.
Table 1: Overview RHM electrical connection types
RHM electrical
connection type
Junction box / terminals Section
JM, SM aluminium, stainless steel / 11 3.1.1.1
TM - / PTFE cable with 9 wires + shield 3.1.1.2
JO aluminium / 12 3.1.1.3
legacy type aluminium, stainless steel / 9 3.1.1.4
3.2.1.1 RHM Electrical Connection Type JM & SM (11 Terminals)
Table 2: RHE21 Wiring Plan for RHM Connection Types JM, SM
RHM Terminal Cable RHE21 Terminal
1
No. Name
Wire
Color
Function No. Name
1 DRV H Brown Drive Coil high 1 DrvH
2 DRV L Blue Drive Coil low 2 DrvL
3 PT P Red Temperature Sensor Pipe 3 PtP
4 PT G Pink Temperature Sensors GND 4 PtG
5 PT T Orange Temperature Sensor Torsion 5 PtT
6 PUA H Yellow Pick Up Coil A high 6 PkAH
7 PUA L Green Pick Up Coil A low 7 PkAL
8 PUB L Grey Pick Up Coil B low 8 PkBL
9 PUB H White Pick Up Coil B high 9 PkBH
10
2
PE (yel/grn)
Shield 10 PE
11
2
PE C (yel/grn)