Figure 8: Connection Of 4 - 20 Ma Pressure Sensor On A Multiple Inverter System - DAB MCE-150/P Installations- Und Wartungsanleitungen

Multiple inverter connection:
Multiple inverter systems can be set up with a single 4-20mA current pressure sensor, but the sensor must be
wired on all inverters. To connect the inverters, a shielded cable must be used (sheath + 2 wires).
Proceed as follows:

Connect all earthing terminals of the inverters.

Connect terminal 18 of J5 (GND) of all inverters in the chain (use the sheath of the shielded cable).

Connect terminal 1 of J5 (GND) of all inverters in the chain (use the sheath of the shielded cable).

Connect the pressure sensor to the first inverter in the chain.
brown wire (IN +) on terminal 11 of J5
o
green wire (OUT +) on terminal 7 of J5
o

Attach connector 8 of J5 on the 1st inverter to connector 7 of J5 on the 2nd inverter. Repeat the
operation for all inverters in the chain (use the shielded cable).

Wire in a jumper between connector 8 and 10 of J5 on the last inverter to close the chain.
Figure 8 provides the wiring diagram for this procedure.
Figure 10: Connection of 4 - 20 mA pressure sensor on a multiple inverter system
the colours refer to the 4-20mA sensor supplied as an accessory
A
B
C
D
Caution: always use shielded cable to connect the sensors.
To enable use, the current pressure sensor must be configured via software, parameter PR
in the installer menu; refer to paragraph 6.5.7. Otherwise the unit may not run, with error BP1
(pressure sensor not connected).
Green (OUT -)
Brown (IN +)
Jumpers
Cable from sensor
ENGLISH
KEY
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