Phase Monitor (Accessories) - Viessmann Vitocal 222-G Installation And Service Instructions Manual

Installation sequence
Power supply
(cont.)
[{A [{S
DE DE
1 2 1 2 3 4
B C
Fig. 32
EA1 extension
A
Connection to controller and sensor PCB
B
Floating N/O contact 1: The agreement of the
C
power supply utility may be required
Note
■ If Smart Grid is enabled ("Enable Smart Grid 7E80"
set to "1"), both inputs DE2 and DE3 cannot be
used for signals "External demand" or "External
blocking".
The power-OFF function is integral to Smart Grid.
■
Therefore do not connect the power-OFF signal to
terminals X3.6 and X3.7. Do not remove jumper.

Phase monitor (accessories)

Installation and electrical connection
Phase monitor installation instructions
The phase monitor monitors the compressor power
■
supply.
If the internal tolerance range is exceeded or under-
■
shot, the phase monitor interrupts the safety chain
via a floating contact. The compressor stops.
■ The phase monitor automatically re-enables the
compressor power supply if the values return to
within the specified tolerance range. No reset
required.
Note
If the phase monitor has responded, check the power
supply and remove the cause of the fault.
34
A
[{D [{{] 0-10V
DE
5 6 + -
D
f-]
A
N L1
E
Floating N/O contact 2: The agreement of the
D
power supply utility may be required
Power supply 1/N/PE 230 V/50 Hz
E