I6
3
4
G
B
0
9
2
0
3
1
1
0
0
4
7
1
10
COMMUNICATION
– The PMVF 80 can be fitted with an optional standard communication module from those listed below. When a communication module is installed, it must be configured through the dedicated M05 -
COMMUNICATION MENU.
– The protocol currently supported is Modbus in the RTU, ASCII and TCP variants.
– The equipment is already prepared for communication in accordance with the IEC/EN 61850, possible via installation of a dedicated module.
MODULE TYPE
CODE
FUNCTION
MAX. No.
COMMUNICATION
EXM10 10
USB
1
EXM10 11
RS232
EXM10 12
RS485
EXM10 13
ETHERNET
WIRING DIAGRAMS
Three-phase connection
– Recommended fuses:
• Auxiliary supply and voltage measurement input: F1A (fast);
• Contactor control: MAX F5A (fast).
– IS and BACKUP coils must be connected to NO contacts (14) of OUT1 and OUT2 (24).
– The S2 terminals are connected to each other internally.
– The auxiliary IS contact (feedback) must of necessity be connected.
– In the case of multiple ISs, the IS feedback contact must be a parallel connection of all the ISs’ auxiliary contacts.
– In single-phase wiring, connect terminal V3 to VN.
– Class 1 current transformers are recommended.
ATTENTION: terminals A1 and A1 of EXM... modules are connected internally, as are terminals A2 and A2.
The free A1 and A2 terminals can be used solely for supplying other EXM... modules (Max. 3). Maximum current 500mA.
Maximum protection fuse current: F1A.
POWER UNBALANCE LIMIT (LSP) CONTROL
– In three-phase+neutral systems, with CTs installed, the PMV F80 can also be programmed to carry out the Power Unbalance Limit (LSP) function.
– In this case, when an unbalance is measured between the phase active powers (difference between the highest and lowest powers) of more than 6kW for a time > 30mins or an unbalance of more than 10kW for a
time > 1min, LSP protection trips.
– This protection can be programmed to open relay OUT3 or to open the IS via output OUT1.
– See setup parameters P01.09 to P01.14.
– LSP protection tripping is highlighted by A05 and A06 appearing on the display (for LSP1=6kW and LSP2=10kW imbalance thresholds respectively).
– It is possible to restore manually by pressing the
s t
, buttons simultaneously, or automatically by waiting for the time set with P01.14.
