Operation Manual

Protect PV.250 Operating Instructions
Page 39 of 51 80000027023 BAL, en
X3: When a signal is received, the contact between the two con-
tact points with the lower numbers is closed (normally open or
"NO").
X4: When a signal is received, the contact between the two con-
tact points with the lower numbers is opened (normally closed or
"NC").
X5: The control signal is active when the input is bridged
(normally open). The inverter is switched off.
The following default signals are used for remote signalling:
X3.1-2 3 Inverter feed operation (NO)
X3.4-5 6 DC distribution message* (NO)
X3.7-8 9 AC distribution message* (NO)
X3.10-11 12 Incoming mains fault (NO)
X4.1 2-3 Inverter fault* (NC)
X5.1-2 Inverter remote switch-off (NO)
*): Collective signals that contain all messages and faults
Fig. 20 shows the normally closed contact in the state that applies
when the signal is not active (normally open) or the voltage is zero.
The service switch enables maintenance work on the unit to be
signalled to the MultiCom interface using various protocols.