Symcom 777 Installation Guide

INSTALLATION INSTRUCTIONS FOR THE

MODEL 777

BE SURE POWER IS DISCONNECTED PRIOR TO INSTALLATION!

The Model 777 is a solid-state (electronic) overload relay. It is fully programmable for customized
protection and is designed to protect 3-phase systems with operating voltages of 190-480VAC (500­600VAC for the Model 777-575). The output relay is a Form C contact, which can control a contactor
or other device within the output relay c ontact rating. The unit can be programmed prior to
installation by applying 120VAC to terminals L1 and L2 (except Model 777-575). The unit cannot be
tested for proper operation using this voltage. For testing purposes, 3-phase power needs to be
used with a minimum voltage of 190VAC (450VAC for the Model 777-575).

READ THESE INSTRUCTIONS ENTIRELY BEFORE INSTALLATION.

ELECTRONIC OVERLOAD RELAY

FOLLOW NATIONAL, STATE AND LOCAL CODES.

CONNECTIONS

1. Disconnect power and verif y power is off.

2. Using the four corner tabs or the DIN rail mount, install the 777 directly above or below the
contactor. To use the DIN rail mount, hook the top clip first then apply downward pressure until
the lower clip snaps onto the rail.

3. A) For amperages from 26-90 amps, insert the motor conductors through the holes marked A, B,

and C. Make certain the conductor through each hole corresponds to the right motor
conduct or, i.e. the A phase c onductor should go through the A round hole. See Figure 1 for a
typical wiring diagr am.

B) For amperages less than 26 amps, loop the motor c onductors according t o Table 1. Figure 3

shows an example of the looping required for current ranging from 8.1-12 amps (MULT=3).

C) For amperages greater than 90 amps, external CTs (current transformers) ar e required.

SymCom r ecommends CTs with terminals be us ed for ease of installation. All CT secondaries
must make five passes through the round holes on t he MotorSaver®. See Figure 2 for a
typical wiring diagr am using external CTs.
NOTE: Pay close attention to this diagram to eliminate any power factor errors
when communicating with the device through the RS-485 network.

4. Connect the 3-phase power from the line side of the contactor to L1, L2, and L3 terminals using
12-18 AW G copper wire. These should be tightened to no mor e than 7 inch lbs.

5. Connect the c ontrol circuit wires to the appropriate terminals. The relay is designed for f ail-safe
operation, thus the NO (normally open) contact should be in series with the coil on the contactor
for motor contr ol (see Figure 1). For alarm circuits, the NC (normally closed) c ontact is in series
with the alarm circuitry.

2880 North Plaza Drive
Rapid City, SD 57702 · [phone]

Recommended

Full Load

Amps

2-2.5 2-10 0, 1-9.8 10 10

2.5-3 2.22- 11.1 0, 1.11-10.8 9 9
3-3.5 2.5-12.5 0, 1.25-12.2 8 8

3.5-4 2.85- 14.2 0, 1.42-14 7 7
4-5 3.33-16.6 0, 1.66-16.3 6 6
5-6 4-20 0, 2-19.6 5 5
6-8 5-25 0, 2.5-24.5 4 4

8-12 6.66- 33.3 0, 3.33-32.6 3 3
12-25 10-50 0, 5-49 2 2
25-90 20-100 0, 10-98 1 1

80-110 80-140 0, 40- 120 5 100 (100:5)
110-160 120-210 0, 60- 180 5 150 (150:5)
160-220 160-280 0, 80- 240 5 200 (200:5)
220-320 240-420 0, 120-360 5 300 (300:5)
320-420 320-560 0, 160-480 5 400 (400:5)
400-520 400-700 0, 200-600 5 500 (500:5)
480-600 480-840 0, 240-720 5 600 (600:5)
540-700 560-980 0, 280-840 5 700 (700:5)
560-800 640-992 0, 320-960 5 800 (800:5)

OC Range

(Amps)

Table 1: Wiring Configuration Based on Motor Full Load Amps

UC Range

(Amps)

# of Passes

through each

Window

MULT (CT Ratio)

Figure 1: Typical Wiring Diagram for FLA of 26- 90

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Figure 2: Typical Wiring Diagram Using External CTs.

Figure 3: Looping Example Showing Three Conductors

(MULT=3 from Table 1)

(No other necessary connections are shown.)

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PROGRAMMABLE PARAMETERS

The following settings MUST be programmed by the us er in order to provide proper protection for
the applic ation. All parameters are actual values except for the VUB and CUB settings; these are
programmed as percentages. The range each parameter can be programmed to is found on the
electric al specifications table on page 13. S ee page 8 for pr ogramming examples.

LV/HV - The recommended settings for LV (low voltage) and HV (high voltage) acc ording to the

NEMA MG1 standard are ±10% of the motors nameplate voltage. For other settings, the
motor manufacturer should be contacted.
Example: The motor nameplate voltage is 230 volts. 90% and 110% of 230 is 0.9 x

230=207 volts for the LV setting and 230 x 1.1=253 volts f or the HV setting. These
parameters are based on the average voltage going to the motor.

VUB - VUB (voltage unbalance) is factory set at 6%. The NE MA MG1 standard says a motor

should not be operated above a 1% volt age unbalance without derating the motor. Most
utility supplied power sources have a difficult time sustaining a 1% VUB. The motor
manufacturer should be consulted for an exact VUB setting. A setting of 999 for VUB will
disable the VUB protection but will not disable SP (single-phase protection).
The VUB is calculated as follows:
%VUB = [(Maximum deviation from the average)/Average] x 100%
Example: Measured line-line voltages = 203, 210, and 212, so the average =

(203+210+212)/3 = 208.3, the maximum deviation from the average is the biggest
differenc e between the average voltage (208.3) and any one voltage reading, 212-

208.3 = 3.7, 210-208.3 = 1.7 and 208.3-203 = 5.3, therefore the maximum deviat ion
from the average is 5.3. The VUB is then = 5.3/208.3 x 100= 2.5%.

MULT - MULT (multiplier) setting is found on Table 1. The MULT setting is determined by the

current the unit will be monitoring. This allows the unit to display the correct current.
Changing this s etting will als o change the UC, OC, and GF s etpoints.

OC- OC (overcurrent) is usually set at the servic e factor amperage (typically 100-115% of motor

FLA) of the motor, which is determined by the motor manufacturer. If any one leg of current
exceeds the OC s etting, the unit will follow its overload trip curve (see Figure 4).

UC - UC (undercurrent) is typically set at 80% of the full-load amperage of the motor. This is

usually adequate for protection of loss of load for many pumps and motors, including
submersibles. If the motor is not pulling near full load amperage then the UC may have to
be set to something higher than 80% of FLA for adequate protection. UC can be set to 0 if
UC protection is not desired. The UC trip point examines average current to determine if an
undercurrent trip condition exists.

CUB - CUB (curr ent unbalance) is factory set to 7%. SymCom recommends the motor

manufacturer be contacted f or an exact setting. The CUB is calculated the same way the
VUB is determined above. The CUB protection can be disabled by programming a 999 in
this setting. This will disable current unbalance protection and current single phasing
protection.

TC - TC (trip class) is t he par ameter used to determine when the unit will trip when an overload

condition is detected. For st andard motors, the TC is typic ally set at 20. The motor
manufacturer should be contacted for exact TC settings. Table 2 and Figure 4 show the TC
settings and trip times.

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RD1 - RD1 (restart delay one) is the rapid-cycle timer in s econds. This timer is initiated when

power is f irst applied t o the unit. If voltages are within the programmed limits and no SP
(single-phase) or RP (revers e-phase) condition exists when power is applied to the device,
the output relay will energize (the NO will close and the NC will open) as soon as RD1
expires). Typic ally, this is set to 20-30 seconds. This will provide adequate protection for
successive power outages or short cycling c aused by other motor c ontrols. This timer is
also initiated when another c ontrol shuts the motor off (current goes to zero). If the user
does not want the unit’s relay to de-energize when another control shuts the motor off, then
RD1 should be set to zero. This will als o ensure that when an alar m circuit is used, an alarm
will sound only when there is a true problem or when power is lost.

RD2 - RD2 (restart delay two) is the restart timer, in minutes, used when the unit has shut off due

to a current unbalance, current single phasing, or an overload condition. This timer is known
as a motor cool-down timer. A setting of 5-10 minutes will give most motors adequate time
to cool down aft er an overload condition. The motor manufacturer should be contacted for
an exact value.

RD3 - RD3 (restart delay three) is the restart timer, in minutes, used after an undercurrent tr ip. It is

also known as a dry-well recovery timer in pumping applications. This would be the time it
takes a well to recharge after pumping dry. This setting varies widely from application to
application and there is no typical setting.

#RU/ADDR - The #RU/ADDR is a dual function setting. The #RU settings cover from the 7 o’clock

position to the 11 o’clock position. ADDR settings start after the 11 o’clock position.

#RU is the number of restarts after an undercurrent trip condition before the unit locks and
requires a manual restart. This counter will be cleared one minute after start-up if the unit
does not trip again on UC. #RU c an be set to 0, 1, 2, 3, 4, or A. A s etting of zero means no
automatic restarts after an undercurrent. A setting of “A” means the unit will always
automatically restart after an undercurrent.

ADDR is the RS-485 address of the particular device. This is only used when
communicating with an RM-2000 (set ADDR=A01), a PLC, or PC. The ADDR can be
programmed from A01-A99.

#RF - #RF is the number of restarts allowed after a current unbalance, current single phasing, or

an overload condition. A setting, which includes an “oc” prefix, will include overcurrent in the
number of successive restarts. If “oc” is not a prefix to the programmed setting, the unit will
require a manual restart after an overcurr ent. A setting of zero means the unit will not try to
restart after a CUB, OC, or SP. A setting of “ocA” means the unit will always try to restart
after a CUB, OC, or SP.

UCTD - UCTD (undercurrent trip delay) is the amount of time, in seconds, the unit will allow the

motor to run in an undercurrent situation before de-energizing its relay. Typic ally, UCTD is
set to 2-4 seconds.

GF - GF (ground fault) is the maximum allowable curr ent, which can flow to ground before the

unit de-energizes its relay. This is a residual, class II ground f ault system and should not be
used for personnel safety. A typical s etting f or this is 10%-20% of the motor full load current.
The real GF current level is programmed int o the unit. The GF test procedure on the last
page of the installation instructions must be conducted before the device is brought online.

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PROGRAMMING

1. Rotate the MODE SELECT switch to the parameter to be progr ammed. SymC om recommends
that LV be progr ammed first and then move clockwise through the positions to c omplete the
process.

2. Press and hold the RESET/PROGRAM button.

3. Rotate the DISPLAY/PROGRAM knob until the pr oper setting for the parameter that is being
programmed is displayed.

4. Release the RESET/PROGRAM button. This stores the new parameter in the nonvolatile
memory. If the number changes back to what is was before programming, then the tamper guard
is on and will need to be unlocked before programming can be completed. (See page 14 for
tamper guard procedures.)

5. Continue steps 1-4 until all parameters are programmed.

OPERATION

The relay operation of the Model 777 is designed to be fail safe. This means when everything is
within the limits programmed into the unit, the relay will energize, the NO contact will close and the
NC contact will open. Once the unit has been wired and programmed, the unit is ready to operate.
Turn MODE SELECT to the RUN position. The display will show “run” alternating with some number
(the numbers displayed will be the number corresponding to where the DISPLAY/PROGRAM knob
is pointed). It will do t his for the amount of time programmed into RD1. After this time has expired,
the relay will energize (NO contact will clos e and the NC contact will open). If something els e is in
the display, s ee the troubleshooting section for more inf ormation. If the MODE SELECT is t aken out
of the RUN position, the units relay will de-energize.

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Trip Class Application Description

5

10

15

20

30

J Prefix

Small fractional horsepower motors where acceleration times are almost
instantaneous or where extremely quick trip times are required

(

Fast Trip) Hermetic refrigerant motors, compr essors, submersible
pumps and general-purpose motors that reach rated speed in less than 4
seconds.

Specialized applic ations.

(Standard Trip) Most NEMA-rated general-purpose motors will be
protected by this setting.

(Slow Trip) Motors with long acceleration times (>10 seconds) or high
inertia loads.

Programming any of the trip classes with the J prefix will enable jam
protection. This additional protection is enabled 1 minute after the motor
starts and provides a 2 second trip time for motors exceeding 400% of
the OC setting, regardless of trip class.

Table 2: Trip Class Descriptions

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Figure 4: Overload Trip Curves

PROGRAMMING EXAMPLES

Example #1

Motor to be protected: 3-phase, 460 Volt, 25 hp air compressor with a full load amperage rating of
34A and maximum service factor amps of 37.4. Use the following calculations and reasoning to
determine the appropriate settings f or this application.

LV- 460 x 0.90 = 414
HV- 460 x 1.10 = 506
VUB- Standard NEMA motor = 5
MULT- From Table 1 = 1
OC- Service Factor Amperage = 37.4
UC- FLA x 0.80 = 34A x 0.80 = 27.2
CUB- Standard NEMA mot or = 5
TC- General purpose motor = 20
RD1- Since this compressor takes about 10 seconds to bleed off excess pressure aft er a

shutdown, setting RD1 = 20 will allow the compress or to unload before being restarted.

RD2- Because the motor may be hot fr om running in an unbalance or single phase condition,

a motor c ool-down time of 10 minutes, RD2 = 10, should be appropriate.

RD3/#RU- Becaus e an undercurrent would signal a serious problem in this application (a broken

shaft or belt), #RU should be set to 0 for a manual r eset. Therefore, RD3 does not
have any function

#RF- Because an overload (overcurr ent) fault signals a serious problem in this application

(e.g., worn bearings), "oc" should not be included in the #RF setting so that a manual
reset after an overload fault is required. A #RF=1 will give the system 1 chance to
recover from an unbalance or single phasing problem before manual reset is required.

UCTD- Setting UCTD = 5 will allow normal operation and not allow the motor to run too long in

a failure mode.

GF- A ground fault setting of 15% of full load amps will be a significant indic ator that the

motor should be evaluated for repair or replacement. Therefore, GF = 34A x 0.15 =

5.1.

Example #2

Motor to be protected: 3-phase, 230 Volt, 5 hp submersible pump with a full load amperage of 15.9
A and maximum service factor amps of 18.2. Use the following calculations and reasoning to
determine the appropriate settings f or this application.

LV- 230 x 0.90 = 207
HV- 230 x 1.10 = 253
VUB- Manufacturer suggests 5
MULT- From Table 1, MULT = 2, 1 loop of main conductor
OC- Service Factor Amperage = 18.2
UC- FLA x 0.80 = 15.9 x 0.80 = 12.7
CUB- Manuf acturer suggests 5
TC- From Figure 3, for this (and most) submersible pumps, TC = 10 (fast trip)
RD1- To protect the pump from rapid c ycling, RD1 = 60

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RD2- Sinc e the motor is small and submerged in water, the motor will generally cool down

quickly. R D2=5
RD3- The well history shows that it will fully recover in 2 hours. RD3 = 120
#RU- In this application, we know that the well will eventually recharge its elf, #RU = A

(Automat ic).
#RF- This well is known for sand to jam the impeller, theref ore “oc” should be included s o

that the pump will attempt to automatically restart after an overloaded condition.

History shows that 2 or 3 starts and stops usually clears t he sand out of the impeller.

#RF= oc 2 or oc3.
UCTD- This well may become air locked on startup, but will usually re-prime itself in 5 seconds

or less. UCTD = 10
GF- Because this type of fault indicates the impending failure of the motor and it may take

several days to get a new pump and schedule for a driller to remove and replace the

pump, GF setting of 10% of full load amperage will give the well owner enough time to

prepare f or pump replacement. GF = 15.9A x 0.10 = 1.59

SYSTEM DISPLAY

The output display can show one of the following parameters when the MODE SELECT s witch is in
the RUN position: average voltage or current, each line current, or each individual line-line voltage.
The display is also used for programming the operating parameters of the device. The display also
identifies what c aused 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. T able 3 below lists the fault c odes the unit c ould display.

Displayed

Message

oc Tripped on overcurrent

SP

ub

uc Tripped on undercurrent

CF Tripped on contactor failure

GrF Tripped on ground fault

H I A high voltage condition exis ts

Lo A low voltage condition exists

rP

oFF A stop c ommand was issued fr om a remote source

Meaning

Tripped on current single phasing or unit won’t start because the voltage is
single phased

Tripped on current unbalance or unit won’t start because the voltage is
unbalanced

Incoming phases have been reversed, the motor may run backwards if
started

Table 3: Fault Codes and Their Meaning

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COMMUNICATIONS PORT/REMOTE RESET

The unit comes with a 9-pin sub-D connector for remote communications and/or f or using a remotely
located reset button. If communications are desir ed, a communication module (part number
RS485MS-2W) needs to be plugged into this 9- pin connector (this is mandatory when
communic ating with the unit). This module pr ovides isolation, signal conditioning for compatibility
with Modbus RTU and RS-485 networks, and provides terminals for terminating the shielded
communic ations cable. Up to 99 units can be installed on one RS-485 network.

Further information can be obtained at http://www.symc ominc.c om or by calling in a request. A
remote reset button can be hooked up to the c ommunic ations 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.

Figure 5: Remote Reset Button Wiring Diagram

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TROUBLESHOOTING

The MotorS aver® will display a fault code alternating with a number or with “run” when it is in a trip
condition. If the unit is showing a fault code (see T able 4) alternating with “run,” it has tripped on a
current ( amper age) condition. If the fault code is alternating with some number (voltage reading or
zero), the unit will not allow the motor to start because there is a problem with the inc oming voltage.
If the dis play is showing just a fault c ode, the unit is in a mode that requires a manual reset. This
could be because the number of restarts (#RF, #RU) has expired or is not allowed. If the display
reads “off,” a stop command was issued through the communications network.

PROBLEM SOLUTION

The voltage inputs are reverse phased. If this is the
initial start-up, swap any two of the leads c onnected to

The unit will not start. Display
alternates “rP” with the
DISPLAY/PROGRAM
parameter value.

The unit will not start. Display
alternates “SP”, “ub”, “HI”, or
“Lo” with the DISPLAY/
PROGRAM parameter value.

Display alternates “SP”, “ub”, or
“oc” with “run.”

Display alternates “uc” with
“run.”

Display is showing a s olid “SP”,
“ub”, or “oc.”

Display is showing a s olid “uc.”

Display is showing a s olid “CF.”

Display is showing a solid
“GrF.”

L1, L2, or L3 on the 777 to correct the problem. If the
overload relay has been previously r unning, the power
system has been reverse phased. Check the phase
sequence of the incoming power lines. Note: L1 must
be tapped from c onductor Phase A, L2 from B, and L3
from C f or corr ect power factor measurements on
remote c ommunic ations.

The incoming voltage is not within the limits
programmed in the VUB, HV, and LV settings. Adjust
the DISPLAY / PROGRAM switch to read the incoming
line voltage values. Correct the incoming power
problem and check programmed limits to verify they are
correct.

The overload relay has tripped on the fault shown on
the LED display and is timing down RD2 before
restarting.

The overload relay has tripped on undercurrent and is
timing down RD3 before restarting. If undercurrent is
not a normal c ondition for this installation, check for
broken shafts, broken belts, etc.

The unit has tripped on the f ault shown and a manual
reset is required because of the programmed setting in
#RF. Check the system for problems that would
produce the single-phase, overload or current
unbalance fault, such as a jam.

The unit has tripped on undercurr ent and a manual
reset is required because of the setting in #RU. Check
the system for problems that would produce a loss of
load such as a br oken belt or a lack of liquid to pump.

The unit has tripped on current single phasing, but was
not single phased by the incoming voltage. Check for
damaged contacts or loose wiring.

A ground fault current greater than the progr ammed GF
value has been detected. A manual reset is required.
Check the motor for insulation breakdown.

Table 4. Troubleshooting

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MODEL 777 SPECIFICATIONS

Electrical

Input Voltage

Frequenc y 50-60 Hz

Motor Full Load Amp Range

Power C onsumption 10W (Maximum)

Output Contact Rating SPDT (Form C)

Expected Life

Mechanical 1 x 106 operations

Electrical 1 x 105 operations at rated load

Accuracy at 25° C (77° F)

Voltage ±1%
Current ±3%(<100A Direct)
GF Current ±15%
Timing 5% ±1 second

Repeatability

Voltage ±0.5% of nominal voltage
Current ±1% (<100A direct)

Trip Times (Those not shown have user selectable trip times.)

Ground Fault Trip Time

101%-200% of Setpoint
201%-300% of Setpoint
301%-400% of Setpoint
401% or Greater

Current U nbalanc e Trip Times

% Over Setpoint

1%
2%
3%
4%
5%
6%
10%
15%

Safety Marks

UL UL508, UL1053
CE IEC 60947-1, IEC 60947-5-1

Standards Pass ed

Electrostatic Discharge (ESD)
Radio Frequenc y Immunity (RFI),
Conducted
Radio Frequenc y Immunity (RFI),
Radiated

Fast Tr ansient B urst IEC 1000-4-4, Level 3, 3.5 kV input power
Surge

IEC

200-480VAC, 3-phase (Standard)
500-600VAC for Model 777-575

2-25A, 3-phase ( Looped conductors required)
25-90A, 3-phase (Dir ect)
80-800A, 3-phase (External CTs)

Pilot duty rating: 480VA @ 240VAC General
purpose: 10A @ 240VAC

Trip time
8 seconds ±1 second
4 seconds ±1 second
3 seconds ±1 second
2 seconds ±1 second

Trip time
30 seconds
15 seconds
10 seconds

7.5 seconds
6 seconds
5 seconds
3 seconds
2 seconds

IEC 1000-4-2, Level 3, 6kV contact, 8kV air
IEC 1000-4-6, Level 3 10V/m

IEC 1000-4-3, Level 3 10V/m

1000-4-5 Level 3, 2kV line-to-line; Level 4, 4kV
line-to-ground

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ANSI/IEEE

Hi-potential T est Meets UL508 (2 x rated V +1000V for 1 minute)

Vibration

Shock

C62.41 Surge and Ring Wave Compliance to a
level of 6kV line-to-line

IEC 68-2-6, 10-55Hz, 1mm peak-to-peak, 2
hours, 3 axis

IEC 68-2-27, 30g, 3 axis , 11ms duration, half­sine pulse

Mechanical

Dimensions 3.0"H x 5.1 " D x 3.6"W
Terminal Torque 7 in. lbs.
Enclosure Material Polycarbonate
Weight 1.2 lbs
Maximum Conductor Size Through 777 0.65" with insulation

Environmental

Temperature Range

Pollution Degree 3
Class of Protection IP20, NEMA 1
Relative Humidity 10-95%, non-condensing per IEC 68-2-3

Ambient Operating: -20°-70° C (-4°-158°F)
Ambient Storage: -40°-80° C (-40°-176°F)

Programmable Operating Points Range

LV- Low Voltage Threshold 170V (450V*) - HV Setting
HV- High Voltage Threshold LV Setting - 528V (660V* )
UB- Voltage Unbalance Threshold 2-15% or 999%
MULT- # of Conductors

or CT Ratio (XXX:5)

OC- Overcurrent Threshold

UC- Undercurrent Threshold

CUB- Current Unbalance Threshold 2-25% or 999%
TC- Overcurrent Trip Class ** 5, J5, 10, J10, 15, J15, 20, J20, 30, J30
RD1- Rapid Cycle Timer 0, 2-500 Seconds
RD2- Restart Delay After All Faults

Except Undercurrent (motor cool-down
timer)

RD3- Restart Delay After Undercurrent
(dry-well recovery timer)

#RU- Number of Restarts After
Undercurrent

ADDR- RS485 Address A01- A99
#RF-Number of R estarts After All Faults

Except Undercurrent
UCTD- Undercurrent Trip Delay 2-60 Seconds

GF- Ground Fault Current Threshold

NOTES: SymCom's Overload Relay can be preprogrammed prior to installation by applying 120VAC
between the L1 and L2 terminals (except 575 Volt model). Power applied must be 110VAC or greater.
* 575 Volt model.
** If J Prefix is displayed in trip class setting, jam protection is enabled.
*** If "oc" is displayed in the #RF setting, then overcurrent will be included as a normal fault and the
relay will automatically restart after RD2 expires, otherwise, manual reset is required after an
overcurrent fault.

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1-10 Conductors or 100- 800 Ratio

(20-100A) ÷ MULT or 80- 120% of CT
Primary

(0, 10-98A) ÷ MULT or 40-100% of CT
Primary

2-500 Minutes

2-500 Minutes

0, 1, 2, 3, 4, A (Automatic)

*** 0, 1, oc1, 2, oc2, 3, oc3, 4, oc4, A, ocA

(3-20A) ÷ MULT or 10-30% of CT Primary
or OFF

1/05

CLEARING LAST FAULT

The last fault stored c an be cleared on the MotorSaver® by f ollowing these steps:

1. Rotate the MODE SELECT switch to GF.

2. Press and hold the RESET/PROGRA M button. Adjust the DISPLAY/PROGRAM adjustment until

“cLr” appears on the dis play. Release the RESET/PROGRAM button.

To verify the last fault was cleared, place the MODE SELECT switch in the RUN position. Then
press and hold the RESET/PROGRAM button; “cLr” should be on the display.

TAMPER GUARD

The MotorSaver’s setpoints c an be locked to protect against unauthorized program changes.

1. Rotate the MODE SELECT switch to GF.

2. Press and hold the RESET button. Adjust the DISPLAY/PROGRAM knob until “Loc” appears on

the display.

3. Release the RESET button.

4. Turn MODE SELECT switch to RUN.

The progr am is now locked, but all settings c an be viewed. The unit can be unlocked by following
the same steps except adjust the DISPLAY/PROGRAM knob to “unL” in step 2.

GROUND FAULT TESTING PROCEDURE

A ground fault test must be performed before installing the MotorSaver® as required by
UL1053 and NEC, ANSI/NFPA 70.

1. Disconnect power.

2. Hook up the thr ee line voltages to L1, L2, and L3 as required by the installation instructions.

3. Program the desired parameters into the unit. F or test purposes, set MULT to 1 and GF to the

minimum allowed setting.

4. Construct the circuit, using an AC power supply. This circuit simulates a ground fault condition by

generating a current in one of the phases. Alternate test circuits may be used. The only
requirement is the current thr ough the current transformer must be between 115% and 150% of
the GF s etting and pass through only one CT window.

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5. The values of V and R will be determined by the current required to generate a GF trip condition:

I = Vrms/R, where I = 115% of GF setting.

6. Place the unit in the RUN position, apply 3-phase power and allow the NO contact to close.

7. Energize the test circuit by pushing and holding the test pus hbutton until the unit trips (within 8.5

seconds). The display s hould show “GrF” and the NO contacts should be open. R elease the NO
pushbutton.

8. The results of the test are to be recorded on the test f orm provided below. The form should be

kept by those in charge of the building’s electrical installation in order to be available to the
authority having jurisdiction.

9. Confirm programmed parameters and proceed with installation instructions.

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GROUND FAULT TEST RESULTS*

Date Performed by Results Location

*A copy of this form should be retained by the building’s electrical foreman.

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SymCom W arrants its microcontroller based products against defects in material or workmanship for
a period of five (5) years from the date of manufacture. All other products manufactured by SymCom
shall be warr anted against defects in material and workmanship for a period of two (2) years from
the date of Manufactur e. For complete inf ormation on warranty, liability, terms, returns, and
cancellations, please refer to the SymCom Terms and Conditions of Sale document.

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Visit our website at www.symcominc.com

for our complete catalog and new product listings!

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2880 North Plaza Drive
Rapid City, SD 57702 · [phone]

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