8 © 2010 SymCom, Inc. All Rights Reserved
#RU/ADDR
- Restart Attempts (undercurrent)/Address. The #RU/ADDR is a dual-function setting.
#RU settings are displayed and selected by turning the DISPLAY/PROGRAM knob from
approximately the 7 o’clock to 12 o’clock position. ADDR settings are displayed and
selected by turning the DISPLAY/PROGRAM knob from approximately the 12 o’clock to 5
o’clock position.
#RU is the number of restarts the 777-P2-DEMO will attempt after an undercurrent fault
before the unit locks out and requires a manual reset. #RU can be set to 0, 1, 2, 3, 4, or A.
This counter is cleared one minute after restarting if the 777-P2-DEMO does not trip again
on undercurrent.
If #RU is set to “0”, the 777-P2-DEMO will require manual resetting after all undercurrent
faults.
If #RU is set to “A”, the 777-P2-DEMO will always automatically restart after undercurrent
faults, once the RD3 timer expires.
ADDR is the RS-485 address of the 777-P2-DEMO and is only used when communicating
with any external communication device. The address can be set from A01–A99.
SET #RF
AT "A." SET ADDR AT "A01."
#RF/COM
- Restart Attempts (other faults)/ Communications Settings. The #RF settings are
displayed and selected by turning the DISPLAY/PROGRAM knob from approximately the 7
o’clock to 12 o’clock position. COM settings are displayed and selected by turning the
DISPLAY/PROGRAM knob from approximately the 12 o’clock to 5 o’clock position.
#RF is the number of restarts the 777-P2-DEMO will attempt after current unbalance or
current single-phase faults before the unit locks out and requires a manual reset. This
counter will be cleared one minute after start-up if the unit does not trip again for the same
fault condition. Available settings are 0, 1, 2, 3, 4 and A, or to include overcurrent faults,
#RF can be set to oc1, oc2, oc3, oc4 or ocA.
If #RF is set to “0”, the 777-P2-DEMO will require manual resetting after all current
unbalance, current single-phase and overcurrent faults.
If #RF is set to “A”, the 777-P2-DEMO will always restart automatically after current
unbalance and current single-phase faults, once the RD2 timer expires. Overcurrent faults
will require a manual reset.
If #RF is set to “ocA”, the 777-P2-DEMO will always restart automatically after current
unbalance, current single-phase and overcurrent faults, once the RD2 timer expires.
COM determines the baud rate, even/odd parity, and stop bit. COM can bet set to C00-
C07. C00 and C04 are duplicates provided for backward compatibility.
C00 = 9600 baud, No parity, and 1 stop bit
C01 = 9600 baud, Odd parity, and 1 stop bit
C02 = 9600 baud, No parity, and 1 stop bit
C03 = 9600 baud, Even parity, and 1 stop bit
C04 = 19200 baud, No parity, and 1 stop bit
C05 = 19200 baud, Odd parity, and 1 stop bit
C06 = 19200 baud, No parity, and 1 stop bit
C07 = 19200 baud, Even parity, and 1 stop bit
SET #RF AT "ocA." SET COM AT “CO3.”
UCTD
- Undercurrent Trip Delay. The length of time, in seconds (default), the unit will allow the
motor to run in an undercurrent situation before de-energizing its relay. Typically, UCTD is
set to 2-4 seconds to allow for motor to reach full load.
SET AT “4."
GF
-
Ground Fault. The maximum allowable current that can flow to ground before the 777-P2-
DEMO de-energizes its relay. This is a residual, class II ground fault system and should not
be used for personnel safety. A typical setting for GF is 10-20% of motor FLA (in amps).
GF may be set to oFF if this feature is not desired.
SET AT "5."
