Figure 5. Remote Reset Button Wiring Diagram
SYSTEM DISPLAY
The output display can show one of the following parameters when MODE SELECT is at RUN: kW
or hp, each line current, or each individual line-to-line voltage. The display is also used for
programming the operating parameters of the device. The display also identifies what caused the
unit to de-energize its relay or what is keeping the unit from energizing its relay. The last fault, not
the current fault, can be displayed by pressing and holding the RESET/PROGRAM button while the
MODE SELECT switch is in the RUN position. When the unit trips off or is holding the motor off, the
current fault condition will be shown in the display without pressing the button. Table 5 below lists
the fault codes the unit could display.
Displayed
Message
Fault
oc
Tripped on overcurrent
SP
Tripped on current single-phasing or unit won’t start because the
voltage is single phased
ub
Tripped on current unbalance
LPR
Tripped on low power
HPR
Tripped on high power
CF
Tripped on contact failure
RP
Incoming phases have been reversed, motor may run backwards if
started
OFF
A stop command was issued from a remote source
Table 5. Fault Codes
COMMUNICATIONS PORT/REMOTE RESET
The unit comes with a 9-pin, sub-D connector for remote communications and/or for using a
remotely located reset button.
If communication is desired, a communication module (part number RS485MS-2W) needs to be
plugged into this 9-pin connector (this is mandatory when communicating with the unit). This module
provides isolation, signal conditioning for compatibility with Modbus RTU and RS-485 networks, and
provides terminals for terminating the shielded communications cable. Up to 99 units can be
installed on one RS-485 network. Further information can be obtained at
S
ym
C
om
website
or
by
calling at 1-800-8
94
-
0412
.
A remote reset button can be hooked up to the communications module (pn RS485MS-2W) or can
be hooked directly to the 9-pin connector using a male sub-D connector. It should be wired as
shown in Figure 5.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]