Motor Saver SymCom 77C Installation Instruction page 5

#RU- #RU is the number of successive restart attempts allowed after an undercurrent fault
before the overload relay requires manual resetting. A setting of 0 is manual reset
and a setting of A is continuously automatic reset.
#RO- #RO is the number of successive restart attempts allowed after an overcurrent
fault. The following settings are available: 0, 1, 2, 3, 4 and A. A setting of 0 is manual
reset and a setting of A is continuously automatic.
ADDR- ADDR is the address setting for RS-485 communications. Available settings are from
A01 - A99. This setting is ignored if RS-485 communication is not used.
UCTD- UCTD is the undercurrent trip delay timer. This setting represents the maximum time
the Model 77C will tolerate an undercurrent condition. Typically, UCTD is set to 2-4
seconds.
OPT1- OPT1 is the linear overcurrent trip delay (2-60 seconds). This programming position is
used only if the TC position is set to "LIn." This setting will determine the period of time
that will expire before tripping on overcurrent, after the amperage exceeds the OC
setting (see programming example #2).
OPT2- OPT2 is the used to set RD2 and RD3 in seconds or minutes. (e.g., RD2=10, RD3=20, if
OPT2=2 (from the table below), RD2=10 seconds and RD3=20 minutes.)
OPT2 RD2
0 Minutes
1 Minutes
2 Seconds
3 Seconds
Table 3: OPT2 Settings
RD3
Minutes
Seconds
Minutes
Seconds
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