Endress+Hauser Cerabar PMC11 - Electrical Connection; Connecting the Measuring Unit

Electrical connection Cerabar PMC11, PMC21, PMP11, PMP21, PMP23
20 Endress+Hauser
6 Electrical connection
6.1 Connecting the measuring unit
6.1.1 Terminal assignment
L
WARNING
Risk of injury from the uncontrolled activation of processes!
‣
Switch off the supply voltage before connecting the device.
‣
Make sure that downstream processes are not started unintentionally.
L
WARNING
Supply voltage might be connected!
Risk of explosion!
‣
Make sure that no supply voltage is applied when connecting.
‣
Switch off the supply voltage before connecting the device.
L
WARNING
Limitation of electrical safety due to incorrect connection!
‣
In accordance with IEC/EN61010 a separate circuit breaker must be provided for the
device .
‣
The device must be operated with a 500 mA fine-wire fuse (slow-blow).
‣
When using the measuring device in hazardous areas, installation must comply with
the corresponding national standards and regulations and the Safety Instructions or
Installation or Control Drawings.
‣
All explosion protection data are given in separate documentation which is available
upon request. The Ex documentation is supplied as standard with all devices approved
for use in explosion hazardous areas.
‣
Protective circuits against reverse polarity are integrated.
Connect the device in the following order:
1. Check whether the supply voltage matches the supply voltage indicated on the
nameplate.
2. Connect device in accordance with the following diagram.
Switch on supply voltage.
For devices with a cable connection: do not close reference air hose (see (a) in the
following drawings)! Protect reference air hose against penetration by water/condensate.
4 to 20 mA output
Device M12 plug Valve plug Cable
PMC11
PMP11
PMC21
PMP21
PMP23
L–
L+
2
1
3
0.5A
A0023487
L–
L+
1
2
3
4
0.5A
A0022823
L–
L+
1
2
3
(a)
0.5A
A0023783
1 brown = L+
2 blue = L-
3 green/yellow = ground connection
(a) reference air hose