The lockout may be cancelled by resetting the
power mains (disconnect L-N) for approximately
5 sec.
Electrical data, connections and wiring
The operating voltage limits are shown in the
table section "Motor voltage". The voltage
applied to the motor terminals must lie within
these table limits during both start-up and
normal operations. The maximum allowable
voltage unbalance is 2%. Voltage unbalance
causes high amperage over one or several
phases, which in turn leads to overheating and
possible motor damage. Voltage unbalance is
given by the formula:
Vavg = Mean voltage of phases 1, 2, 3.
V1-2 = Voltage between phases 1 & 2.
V1-3 = Voltage between phases 1 & 3.
V2-3 = Voltage between phases 2 & 3.
| Vavg - V1-2 | + | Vavg - V1-3 | + | Vavg - V2-3 |
2 x Vavg
% voltage
unbalance =
x 100
Voltage unbalance
Compressor
start
Phase monitoring
0 1 s 6 s
Phase sequence module logic
23
FRCC.PC.003.A5.22
Application guidelines
