Operator’s
Manual
Series 200
Automatic Transfer Switching Equipment
D–design 30 through 230 amperes
DANGER is used in this manual to warn of a
hazard situation which, if not avoided, will result
in death or serious injury.
WARNING is used in this manual to warn of a
hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION is used in this manual to warn of a
hazardous situation which, if not avoided, could
result in minor or moderate injury.
Note: Refer to the outline and wiring drawings
provided with your Series 200 ATSE for all
installation and connection details and accessories.
Nameplate / rating Label
The Series 200 Automatic Transfer Switching Equipment
(ATSE) contains a nameplate / rating label which includes
data for that specific ATSE. It defines the loads and fault
circuit withstand/closing ratings. Refer to the labels on the
Transfer Switching device for specific values and use the
ATSE only within their limits.
An experienced licensed electrician should install the
ATSE.
Do not exceed the values on the rating label.
Exceeding the rating can cause person injury or
serious equipment damage.
TABLE OF CONTENTS
section
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 1
SEQUENCE OF OPERATION . . . . . . . . . . . . 2
TESTING & SERVICE . . . . . . . . . . . . . . . . . . . 3
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . 4
CONTROL FEATURES . . . . . . . . . . . . . . . . . . 5
INDEX . . . . . . . . . . . . . . . . . . . . back of manual
50 Hanover Road, Florham Park, New Jersey 07932–1591 USA
For sales or service call 1 800 800–2726 (ASCO) www.ascopower.com
381333–234 E
A typical Catalog Number is shown below with its elements explained:
Catalog Number Identification
Typical D–design Series 200 ATS catalog no. for a solid neutral, 3 pole, 100 amp, 400 V, open type:
design
prefix
letter
D
Neutral
A – solid
B – switching
C – overlapping
200
A
Phase Poles
2 – single Ø
3 – three Ø
blank – none
* 200 & 230 A are limited to 480 volts
3
100
Amperes
30
70
100
150
200 *
230 *
J
5X
Voltage
C 208
D 220
E 230
F 240
G 277
H 380
J 400
K 415
L 440
M 460
N 480
Controller
5 – standard
5X – if
accessories
ordered
SECTION 1
INSTALLATION
The ASCO Series 200 automatic transfer switching
equipment (ATSE) consists of a transfer switching device,
monitoring and transfer control device (controller), and
membrane controls (for door mounting). The ATSE is
factory tested. Installation requires mounting the devices
into an appropriate size enclosure and connection of
power conductors, engine start signal wires, and auxiliary
circuits.
membrane
controls
gasket
ribbon
cable
Mounting
The Outline and Mounting Diagram furnished with the
ATSE shows all mounting details and instructions.
controller
NOTICE
Protect the automatic transfer switching
equipment from construction grit and metal chips
to prevent malfunction or shortened life of the
transfer switching device.
Mount the transfer switch vertically in the back of the
enclosure as shown on the Outline and Mounting
Diagram provided. Level all mounting points of the
rigid supporting structure by using flat washers behind
the holes to avoid forced distortion of the transfer
switch.
cut out in
enclosure
door
enclosure
door
controller
must be within a
steel enclosure
Mount the membrane controls and the controller on the
inside of the enclosure door as shown on the Outline
and Mounting Diagram provided. The membrane
controls must be accessible through a cutout in the
door. Connect the membrane controls to the right side
of the controller with the ribbon cable provided. Then
connect the transfer switching device harness plugs to
the left side of the controller. See Figures 1–1 and 1–2.
Figure 1-1. Membrane controls and controller mounting on inside of enclosure door. Refer to
Outline & Mounting Diagram for mounting hardware.
An add-on rail is provided for some optional accessories. If provided, mounted it below the controller. Then
make the connections shown on the Wiring Diagram.
Grounding
Figure 1-2. Membrane controls with gasket
suitable for IP65 enclosure.
Grounding (earthing) is accomplished by mounting the
automatic transfer switching equipment in a metal
enclosure. Connect the control panel grounding wire
(lower left side) to equipment (enclosure or clean earth)
ground. This wire can be connected to the controller’s
lower left mounting stud. Because the controller is
mounted on a door, a conductive strap must be used
between the enclosure and the door. This connection
provides proper grounding which does not rely upon the
door hinges. See Figure 1–3.
2 plugs for
transfer
switching
device
harness
ground
wire
mounting
stud
ribbon cable
to membrane
controls
connections
for control
features &
options
Figure 1-3. Controller grounding (clean earth)
wire and other connections.
NOTICE
The controller must be grounded for proper
operation.
1--1
INSTALLATION
(continued)
NOTICE
Three conductor spacers must be located as
shown for 150, 200, and 230 ampere transfer
switching devices.
De–energize the conductors before making
any line or auxiliary circuitry connections.
Be sure that Normal and Emergency line
connections are in proper phase rotation.
Place engine generator starting control in the
OFF position. Make sure engine generator is not
in operation.
conductor spacers
Power connections
38 mm approximate
A Wiring Diagram is furnished with the Series 200
ATSE. All wiring must be made in accordance with the
local codes.
Do not run cables in front of the transfer switching
device. Conductors can be bundled on the right side of
the transfer switching device. Maintain proper electrical
clearance between the live metal parts and grounded
metal: 13 mm minimum.
It is not necessary to remove the barriers from the
transfer switching device to install the conductors. If
you do remove them, however, be sure to reinstall the
barriers carefully.
conductor spacer
Figure 1-4. Required conductor spacers for
150, 200, & 230 amp transfer switching devices.
Engine Starting Contacts
The engine control contact connections (if used) are
located on the transfer switching device. Connect signal
wires to appropriate terminals as specified in Table A
and shown in Figure 1–5.
Connect main source and load conductors to clearly
marked power terminals on the transfer switching
device. Be careful when stripping insulation from the
conductors; avoid nicking or ringing the conductor.
Remove surface oxides from conductors by cleaning
with a wire brush. Follow conductor manufacturer’s
instructions when aluminum conductor is used. Apply
joint compound to conductor, then carefully wipe away
excess compound. Tighten the terminals to the torque
specified on the label on the transfer switching device.
Table A. Engine start connections
When normal
source fails
contact closes
contact opens
Three conductor spacers are included with 150, 200,
and 230 ampere transfer switching devices. When
installing power conductors, run them through the
conductor spacers as shown in Figure 1–4. Position the
spacers within 38 mm of the power terminals.
Terminals on
transfer switching device
TB1 and TB2
TB1 and TB3
ENGINE STARTING CONTACTS
( SHOWN DE–ENERGIZED )
TOP
STUD
1
TS
MIDDLE
STUD
2
BOTTOM
STUD
3
NR
NR
TB 1
TB 3
TB 2
Figure 1-5. Engine starting contact label and
location on left side of transfer switching device.
Interconnecting harness
Connect the plug–in harness (two plugs) from the
transfer switching device to left side of the controller, if
not already connected.
Auxiliary Circuits
Connect auxiliary circuit wires (if necessary) to
appropriate terminals by referring to the Wiring
Diagram.
1--2
INSTALLATION
(continued)
Functional Test
The Functional Test consists of three checks: manual
operation, voltage checks, and electrical operation.
Position of the transfer switch is indicated here
weight marked N (normal)
and E (emergency)
NOTICE
Do these checks in the order presented to avoid
damaging the automatic transfer switching
equipment.
maintenance
handle
Read all instructions on the Wiring Diagrams and labels
affixed to the ATS. Note the control features that are
provided and review their operation before proceeding.
1 – Manual Operation
A detachable manual operator handle is provided on the
Transfer Switching device for maintenance purposes only.
Manual operation of the transfer switching device must
be checked before it is operated electrically.
weight
floating
weight
With ALL POWER OFF grasp
maintenance handle and turn it
quickly with your thumb and fingers.
Do not manually operate the transfer switching
device until both power sources are
disconnected: open both circuit breakers.
1.
After deenergizing both power sources, open the
enclosure door. Locate and the maintenance
handle on the left side of the transfer switching
device. See Figure 1–6.
2.
Grasp the attached maintenance handle and turn it
with thumb and fingers as shown to manually
operate it. The maintenance handle turns the
opposite direction of the weight. Turn it up or down
as shown to manually operate the transfer switching
device. It should operate smoothly without any
binding. If it does not, check for shipping damage
or construction debris.
3.
Return the transfer switching device to the N
(normal) position.
Figure 1-6. Maintenance handle and positions.
Now continue to 2 – Voltage Checks on next page.
1--3
INSTALLATION
(continued)
observe these lights
Figure 1–7. Standard controls and indicators.
2 – Voltage Checks
Close the normal source circuit
breaker. The Normal Transfer
1 Switch Position and the Normal
Source Accepted lights should
come on.
First check nameplate on transfer switching device;
rated voltage must be the same as normal and
emergency line voltages.
Source Accepted
Normal
Emergency
Use an accurate voltmeter to
check phase to phase and
2 phase to neutral voltages present at the transfer switching device normal source terminals.
Use extreme caution when using a meter to
measure voltages in the following steps.
Do not touch power terminals; shock, burns, or
death could result !
Perform steps 1 through 6 at the right. Observe the status
lights. See Figure 1–7.
O Black circle means light is on.
P White circle means light is off.
Close the emergency source
circuit breaker. (Start generator,
3 if necessary.) The Emergency
Source Accepted light should
come on.
Source Accepted
Normal
Emergency
Use an accurate voltmeter to
check phase to phase and
phase to neutral voltages pres4
ent at the transfer switching device emergency source terminals.*
* If necessary, adjust voltage regulator on the generator
according to the manufacturer’s recommendations. The
Automatic Transfer Switching Equipment will respond
only to the rated voltage specified on the Transfer
Switching device nameplate.
Also see page 4–1 for the HI–LOW voltage adjust
setting in the controller. The LOW setting shifts all
voltage settings down 4.2%; for example, 240 V to 230
V.
Use a phase rotation meter to
check phase rotation of emer5
gency source; it must be the
same as the normal source.
Shut down the engine–generator, if applicable. The Emergency Source Accepted light should
6 go off. Then put the starting
control selector switch (on the
generator set) in the automatic
position. Close enclosure door.
U V W
Source Accepted
Normal
Emergency
Now continue to 3 – Electrical Operation on next page.
1--4
INSTALLATION
(continued)
observe these lights
press this button
Figure 1–8. Standard controls and indicators.
3 – Electrical Operation
This procedure will check the electrical operation of the
Automatic Transfer Switching Equipment.
The normal source must be
available and the generator
1 must be ready to start.
Check that the Normal Source
Accepted light is on.
Press and hold the Transfer Test
button until the engine starts
2
and runs. This should happen
within 15 sec.
Close the automatic transfer switching
equipment enclosure door and tighten the
screws before you test electrical operation.
The Emergency Source
3
Accepted light should come on.
Transfer Test
Both normal and emergency sources must be available
and the emergency source generator (if used) must be
capable of being started in this procedure.
Perform steps 1 through 8 at the right. Observe the status
lights. See Figure 1–8.
4
O Black circle means light is on.
P White circle means light is off.
NOTE: If Motor Load Transfer
feature is activated, then transfer may
not occur immediately after the
respective time delays. Transfer will
only occur when the phase relationship
between sources is correct.
5
6
NOTE: The operating transfer time of the transfer
switching device is 0,17 second maximum, which is
measured from the time that power is applied to the
operating coil of the transfer switching device until the
main contacts close on the alternative source.
7
This completes the Functional Test of the ASCO
Series 200 Automatic Transfer Switching Equipment.
Leave the engine–generator starting control in the
automatic position.
The transfer switching device
should transfer to the
Emergency position. The
Emergency Transfer Switch
Position light should come on
and the Normal light should go
off.
If the transfer to emergency
delay is used the transfer
should occurs after a time delay
(up to 5 minutes).
For immediate transfer press
the Bypass Time Delay button.
The transfer switching device
should transfer back to the
Normal position. The Normal
Transfer Switch Position light
should come on and the
Emergency light should go off.
If the retransfer to normal delay
is used the retransfer should
occur after a time delay
(up to 30 minutes).
For immediate retransfer press
the Bypass Time Delay button.
The unloaded running delay
keeps the generator running for
5 minutes (cool–down period).
8
Then the generator should stop
and the Emergency Source
Accepted light should go off.
1--5
Source Accepted
Normal
Emergency
Transfer
Test
Source Accepted
Normal
Emergency
Transfer Switch
Position
Normal
Emergency
Bypass
Time Delay
Transfer Switch
Position
Normal
Emergency
Bypass
Time Delay
Source Accepted
Normal
Emergency
SECTION 2 SEQUENCE OF OPERATION
Lights show position of transfer switching device.
Transfer To Emergency
The sequence for load transfer to
emergency
source
begins
automatically when normal
source voltage falls below the
preset dropout point or when
Transfer Test button is pressed. An
under voltage condition on any
phase of the normal source is
detected by the sensor.
Lights show the sources accepted.
Light for built–in
engine exercise timer:
³ blinks rapidly when
button is held 5 sec.
while being set
³ blinks slowly when
button is released (set)
and during 20 min.
exercise period.
³ stays on after engine
stops (exerciser is
enabled for weekly
operation)
When the normal
See page 5–1
source voltage fails
for complete
or the Transfer Test
Hold 15 sec. to
Hold 5 sec. to set
instructions
Press
to
cancel
the
button is pressed, the start the engine
active exercise period 20 min. engine exercise
SE relay de-ener- generator and to (stops engine now or period immediately (engine
gizes and relay NR transfer the load after cooldown) See starts) and weekly thereafter.
page 5–1.
begins its timing to emergency.
Figure 2–1. Membrane controls and indicator lights.
cycle (1 or 3 seconds,
Retransfer to Normal
momentary normal
source outage delay). The NR relay is provided with a time
The sequence for load retransfer to the normal source
delay on dropout to override momentary outages and
automatically begins when the voltage sensor detects
prevent nuisance starting of the engine-driven generator.
restoration of the normal source. The voltage level
If the normal source voltage returns above the sensor
must rise above the preset pickup point on all phases
dropout setting before the time delay expires, the NR
before the sensor will accept the normal source.
relay timing cycle is reset to zero and relay SE energizes.
When the normal source is accepted by the sensor,
If the normal source voltage does not return above the
relay SE begins its timing cycle (adjustable 1 sec. to 30
sensor dropout setting before the time delay expires, the
min., retransfer to normal delay). For immediate
NR relay de-energizes and signals the engine-driven
retransfer press Bypass Time Delay button. SE relay is
generator to start. At the same time, a voltage and
provided with a time delay on pickup to prevent
frequency sensor begins monitoring the emergency
immediate load retransfer to the normal source. The
source. The sensor will accept the emergency source only
delay insures that the normal source has stabilized
when both voltage and frequency reach preset pickup
before reconnection of vital loads. If the normal source
points. Usually about ten seconds elapse from dropout of
voltage falls below the present dropout point before the
the NR relay to acceptance by the sensor. This time span
time delay expires, the timing cycle is reset to zero. If
occurs because the engine-driven generator must crank,
the emergency source fails for more than 4 seconds
start, and run up to nominal pickup points. For this
during the timing cycle, ER relay drops out and the load
reason, if the Transfer Test button is pressed it must be
is immediately retransferred to the normal source, if
held for 15 seconds. If the emergency source is available
that source is acceptable.
immediately, the sensor may accept it as soon as NR relay
SE relay energizes and ER relay is dropped out. The TS
drops out.
coil is energized, the transfer switching device operWhen the emergency source is accepted by the sensor,
ates, and all switch contacts (mains, controls, auxiliarelay ER begins its timing cycle (transfer to emergency
ries) reverse position. The transfer switching device is
delay). ER relay is provided with an adjustable (0 to 5
now supplying the load from the normal source again.
minutes) time delay on pickup to delay transfer of the
Upon retransfer to the normal source, NR relay begins
load to the emergency source. For immediate transfer
its timing cycle (unloaded running delay [engine coolpress Bypass Time Delay button.
down] ). NR relay is provided with a 5 minute time
ER relay energizes, the TS coil is energized, the
delay on pickup to keep the engine running for a
transfer switching device operates, and all switch
cool-down period.
contacts (mains, controls, auxiliaries) reverse position.
NR relay energizes after the time delay and signals the
The transfer switch is now supplying the load from the
engine-driven generator to shut down. All circuits are
emergency source.
reset for any future normal source failure.
The transfer switching device will remain in the
Emergency position until the normal source is restored.
Activation of standard control features shown in Section
5 will alter the sequence of operation and introduce
If the Transfer Test button is used, the transfer switching
additional time delays during transfer operations.
device will remain on emergency until the retransfer to
normal delay times out.
2---1
SECTION 3
TESTING & SERVICE
PREVENTIVE MAINTENANCE
DISCONNECTING THE CONTROLLER
Reasonable care in preventive maintenance will insure
high reliability and long life for the automatic transfer
switch.
The harness disconnect plugs are furnished for repair
purposes only and should not have to be unplugged. If the
controller must be isolated, follow these steps carefully.
Operate the switch at least once a month. Perform this
four step Electrical Operation Test. This is a test with
load transfer.
Disconnecting the Plugs
1. Observe the position of the transfer switching device.
a. If the transfer switching device is in the Normal
position, place standby engine starting control in the
off position. Then open the emergency source circuit
breaker.
b. If the transfer switching device is in the Emergency
position, open the normal source circuit breaker.
Place the engine starting control in the test or run
position.
2. Separate the quick disconnect plugs by squeezing
the latches. Do not pull on the harness wires.
Transfer Switch Test
1. Press and hold the door-mounted TRANSFER
SWITCH TEST button until the engine starts and
runs. This should happen within 15 seconds.
2. The transfer switching device will operate to the
Emergency position. If the Transfer To Emergency Delay is used, the transfer will occur after
a time delay (up to 5 minutes). For immediate
transfer press BYPASS TIME DELAY button.
3. The transfer switching device will operate back
to Normal position after the Retransfer To Normal Delay (up to 30 minutes). For immediate
retransfer press BYPASS TIME DELAY button.
4. Unloaded Running (Engine Cooldown) Delay
allows engine to run unloaded for 5 minutes.
Clean and inspect the switch once a year. De-energize
all sources, then brush and vacuum away any excessive
dust accumulation. Remove the transfer switch barriers
and check contact condition. The non–replaceable main
contacts are designed to last the life of the transfer switch.
Reinstall the barriers carefully.
3. Label, remove, and tape the signal wires connected
to the engine start terminals on the transfer switching device: TB1 and TB3, or TB1 and TB2.
Reconnecting the Plugs
1. Observe the position of the transfer switching device.
a. If the transfer switch is in the Normal position, be
sure that the standby engine starting control is still
in the off position. The emergency source circuit
breaker still should be open.
b. If the transfer switch is in the Emergency position,
normal source circuit breaker still should be open.
2. Reconnect the signal wires connected to the
appropriate engine start terminals on the transfer
switch. See Section 1, Engine Starting Contacts.
3. The harness plugs and sockets are keyed. Carefully
align the plugs with the sockets and press straight in
until both latches click.
4. Restore the opposite source as follows:
a. If the transfer switch is in the Normal position,
place the standby engine starting control in the
automatic position. Then close the emergency
source circuit breaker.
b. If the transfer switch is in the Emergency position,
close the normal source circuit breaker. The load will
be automatically retransferred to the normal source
after the Retransfer to Normal Delay. For immediate
retransfer, press BYPASS TIME DELAY button.
Place the engine starting control in the automatic
position.
Maintain transfer switch lubrication. The transfer
switch has been properly lubricated, and under normal
operating conditions no further lubricating is required.
Renew factory lubrication if the switch is subjected to
severe dust or abnormal operating conditions.
Relubricate the solenoid operator if a coil is replaced.
Do not use oil. Order lubrication 625550–001 (Castrol
EndurexR 4000 lubricant).
Replacement parts. Replacement parts are available in
kit form. When ordering parts provide the Serial No. and
Catalog No. from the transfer switch nameplate.
Contact your local ASCO Power Technologies sales
office.
3--1
TESTING & SERVICE (continued)
MANUAL LOAD TRANSFER
1. Open normal and emergency source circuit
breakers.
This procedure will manually transfer the load if the
controller is disconnected.
2. Use the maintenance handle to manually operate
transfer switching device to the opposite source.
See page 1–4, Manual Operation Test.
3. If the transfer switching device is in the
Emergency position manually start the engine
generator and then close the emergency source
circuit breaker.
Do not manually operate the transfer switching
device until both power sources are
disconnected: open both circuit breakers.
TROUBLE-SHOOTING
Note the control features that are activated or
furnished on the switch and review their operation.
Refer to Section 5, Control Features.
Proceed with care! The automatic transfer
switching equipment is energized.
Table 3-1. Trouble-Shooting Checks.
CHECK IN NUMERICAL SEQUENCE
1 OPERATION
2 GEN-SET
Gen-Set does not start when
Hold the TRANSFER SWITCH Starting control must be in
the TRANSFER SWITCH TEST TEST button 15 sec. or the
automatic position. Batteries
button is pressed and held for outage must be long enough must be charged and
15 seconds or when the
to allow for the 1 or 3 sec.
connected. Check wiring to
normal source fails.
Momentary Normal Source
engine starting contacts.
Outage Delay plus engine
cranking and starting time.
PROBLEM
Transfer switching device
does not transfer the load to
emergency source after the
gen-set starts.
Wait for Transfer to Emergency Delay (0 to 5 min.) to time
out. For immediate transfer,
press the BYPASS TIME
DELAY button. If Motor Load
Transfer is active, wait for inphase condition (see below).
Transfer switching device
does not transfer the load to
normal source when normal
returns or when TRANSFER
SWITCH TEST button is
released.
Wait for Retransfer to Normal
Delay (1 sec. to 30 min.) to
time out. For immediate re–
transfer, press BYPASS TIME
DELAY button. If Motor Load
Transfer is active, wait for inphase condition (see below).
Gen-Set does not stop after
load retransfer to the normal
source.
Wait for the 5 minute
Unloaded Running Delay to
time out.
Generator output circuit
breaker must be closed.
Generator frequency must be
at least 95% of nominal
(48 Hz for a 50 Hz system).
—
3 VOLTAGE
—
Voltmeter should read at least
90% of nominal phase to
phase voltage between
transfer switch terminals U2
and W2 (or L1 and L5 for 2
pole switches). *
* These are factory settings.
Voltmeter should read at least
90% of nominal phase to
phase voltage between
transfer switching device
terminals V1 and W1, W1 and
U1, and U1 and V1 (or L2 and
L6 for 2 pole switches).
Starting control must be in
automatic position.
—
Trouble-Shooting the Motor Load Transfer Feature (refer to page 5–3)
Use extreme caution when using a meter to
measure voltages in the following steps. Do not
touch power terminals; shock, burns, or death
could result !
1. Connect a voltmeter (set for twice system
phase–to–phase voltage) between transfer
switching device terminals U1 and U2 (for 3 pole)
or L1 and L2 (for 2 pole).
2. Manually start generator. Voltmeter needle should
sweep back and forth at a regular rate between 0
and about twice system voltage.
3. Press and hold the Transfer Test button. The load
should transfer to emergency source when meter
needle is near 0 volts. If transfer does not occur,
Motor Load Transfer feature is not operating.
4. Release the Transfer Test button. The load should
retransfer back to the normal source after the
Retransfer to Normal Delay, if used. The retransfer
should occur when the needle is near 0 volts. If
retransfer does not occur after the time delay, the
Motor Load Transfer feature is not operating.
5. For immediate retransfer, press the Bypass Time
Delay button. Then disconnect the voltmeter.
If the problem is isolated to circuits on the controller or the transfer switching device, call your local ASCO
Power Technologies sales office. Furnish Serial No., Bill of Material (BOM) No., & Catalog No. from the
transfer switching device nameplate.
3--2
SECTION 4 ADJUSTMENTS
Time Delay Adjustment
To change a setting, follow procedure on page 4-2. Use
Table 4-1 as a guide to time delay values and their corresponding adjustment DIP switch or potentiometer.
Standard time delays are set to customer specifications
(if none specified, standard factory settings are used).
Table 4-1. Time Delay Settings
DESCRIPTION
LABELS
FACTORY
SETTING
Override Momentary
Normal Source Outages
TD ES
3 seconds
Transfer to Emergency
TIMER
N/E
Unloaded Running
(Engine Cooldown)
1 second
Actuator 1 on
3 seconds
Actuator 1 off
0 minutes
(full ccw)
0 to 5
minutes
—
—
P2
—
4 seconds
non-adjustable
—
—
—
TIMER
E/N
30 minutes
(full cw)
1 second to
30 minutes
—
—
P1
—
5 minutes
non-adjustable
—
—
—
Sensor Adjustments
Any change in these settings may affect the
normal operation of the automatic transfer
switching equipment. This change could allow
the load circuits to remain connected to a low
voltage source.
Table 4-2. Voltage and Frequency Settings. (
PU / N
Pickup
% of nominal
FACT. SET
ADJ RANGE
90 %
95 % *
Actuator 3 off
90 %
Actuator 3 on
80 %
Emergency Source Volt
Voltage
60 / 50 Hz
60 Hz
34,14
34/14
34
––
––
60 Hz
Actuator 4 off
50 Hz
Actuator 4 on
3 phase
Actuator 6 off
1 phase
Actuator 6 on
6
60 / 50
Hz
non-adjustable
non-adjustable
non-adjustable
non-adjustable
6
90 %
75 %
95 %
85 %
4
Voltage Phases
Pickup
Dropout
Pickup
Dropout
4
Emergency Source
Frequency
eque cy
––
––
––
––
1 2
70 %
1 2
Dropout
85 %
1 2
DO / N
85 %
Actuator 1 off
Actuator 2 off
Actuator 1 on
Actuator 2 off
Actuator 1 off
Actuator 2 on
Actuator 1 on
Actuator 2 on
1 2
90 % *
Normal Source Voltage
S1 DIP
SWITCH
3
SETTING
Shaded DIP switches are standard factory settings).
3
LABELS
—
NOTICE
Voltage and frequency sensor pickup and dropout
points are set to customer specifications (if none
specified, standard factory settings are used). To change
a setting, follow procedure on page 4–2. Use Tables 4-2
and 4–3 for settings and corresponding DIP switch
actuators.
DESCRIPTION
ADJUSTMENT
POTENTIOMETER
1
Retransfer to Normal
S3 DIP
SWITCH
1
Override Momentary
Emergency S. Outages
ADJUSTMENT
RANGE
* If dropout voltage is set to 90%, the pickup voltage must be set to 95%.
Table 4-3. Transformer Voltage Adjust.
(Low setting shifts all voltage settings down 4.2%; for example, 240 V to 230 V, or 480 V to 460 V)
DESCRIPTION
HI
4--1
ADJUSTMENT
S3 DIP SWITCH
LOW
Actuator 2 off
HI
Actuator 2 on
2
LOW /
HI
FACTORY SETTING
2
Voltage Adjust (4.2%)
(4 2%)
LABELS
ADJUSTMENTS
NOTICE
(continued)
cover
Do not make any setting changes while the
controller is energized.
thumb
latch
How to Change a Setting
1. Prevent the transfer switching device from operating by disconnecting one source first, then the
other, as follows:
a. If the transfer switching device is in the Normal
position, open the emergency source circuit
breaker. Turn the engine starting control to off.
Then open the normal source circuit breaker.
b. If the transfer switching device is in the
Emergency position, open the normal source
circuit breaker. Turn engine starting control to
test or run. Then open the emergency source
circuit breaker.
2. Disconnect both harness plugs from controller by
squeezing the latches. Do not pull on the wires.
3. Remove cover from the controller by releasing latch
on right side with your thumb. See Figure 4-1.
4. Locate the appropriate adjustment potentiometer or
DIP switch for the setting that you want to change.
Refer to Table 4-1 and Table 4–2 on page 4-1 and
Figure 4-2, Figure 4–3, Figure 4–4 on page 4–2.
5. Use a small screwdriver to turn the potentiometer
clockwise to increase the time delay or counterclockwise to decrease it. See Figure 4-3.
hook on
left side
Figure 4-1. Controller cover latch.
9 volt
alkaline
battery
J5 battery
on/off
jumper
harness
plugs
P1
retransfer
to normal
time delay
P2
transfer to
emergency
time delay
S3 DIP
switch
S1 DIP
switch
S2 DIP
switch
6. Use a ball-point pen (or similar pointed tool) to
slide the switch actuators left or right so they match
the illustration next to the setting (left = off, right =
on). Recheck the setting. See Figure 4-4.
Figure 4-2. Location of potentiometers,
DIP switches, battery, and battery jumper.
clockwise to
increase
P1 or P2
potentiometer
7. Install the cover on the controller by hooking it on
the left side and latching the right side.
8. Reconnect both harness plugs to the controller by
aligning and pressing straight in until latches click.
counterclockwise
to decrease
Figure 4-3. Changing time delay potentiometers.
Close the automatic transfer switching
equipment enclosure door and tighten the
screws before restoring power.
DIP
switches
SW1
SW2
SW3
9. Close the enclosure door, then restore both sources:
a. If the transfer switching device is in the Normal
position first close the normal source circuit
breaker, then close the emergency source circuit breaker.
b. If the transfer switching device is in the
Emergency position, close the normal source
circuit breaker. The load will be automatically
retransferred to the normal source. Then close
the emergency source circuit breaker.
actuator
(8 on each DIP switch)
off
on
Figure 4-4. Setting DIP switch actuators.
10. Turn the engine starting control to automatic.
4--2
SECTION 5 CONTROL FEATURES – ENGINE EXERCISERS
These timers periodically exercise the emergency engine-generator plant. They can be set to exercise with or without
load transfer, or they can be completely disabled. The engine-generator should be exercised under load once a week for
a minimum time period of 20 minutes, or follow the recommendations of the engine-generator set manufacturer. Refer
to page 4–2 for location of DIP switches, battery (provided), and jumper block in the controller.
BUILT–IN ENGINE EXERCISER
DIP Switch Settings
5
Actuator
8 on
8
Exercise
with Load
8
Actuator
8 off
S2 DIP
SWITCH
Actuator
5 on
Actuator
5 on
5
Std. Timer
Enabled
Std. Timer
Disabled
Exercise
without
Load
7
S1 DIP
SWITCH
Actuator
7 on
Actuator
7 off
FUNCTION
7
The engine exerciser included in the Series 200 automatic
transfer switching device provides a once a week
20–minute exercise period. It occurs immediately when
the SET ENGINE EXERCISER push button is pressed
(and held for at least 5 seconds), and then at the same
time weekly thereafter. A 9 volt alkaline battery
(DuracellR MN1604, EverreadyR 522, or PanasonicR
6AM6) is furnished and installed in the controller to
maintain the setting. The battery jumper block must be
shifted to the ON position. See Figure 4–2 on page 4–2.
Shaded DIP switches are standard factory settings.
Fill in day and time set. Week Day ______ Time _______.
status light
Press to cancel an active exercise
period (stops generator).
Press and hold for 5 sec. or until status light
blinks rapidly to set exercise period immediately
and every week hereafter (generator starts).
If Exercise with Load is set, retransfers load to
Normal, then stops generator after min. cooldown.
Figure 5-1. Operator panel pushbuttons and light.
If Exerciser with Load is set,
transfers load to Emergency.
Select below either Exercise without Load or Exercise with Load according to the setting of DIP switch S1, actuator 8. The
load transfers from the Normal source to Emergency source (generator) and back again if Exercise with Load is selected.
Step
1
2
3
4
Push Button
SET ENGINE
EXERCISER
hold 5 sec.
release
press BYPASS
TIME DELAY
—
Explanation
blinks rapidly
FfFfFf
set exercise period
Exercise the generator now and
every week at this time hereafter.
blinks slowly
FffFff
exercise period now active
Generator starts and runs.
F stays on
cancel active exercise period
Generator stops.
F stays on
generator off
Exerciser enabled; repeats every 7 days.
Status Light
8
Step
1
How to Set Built–In Timer
Function
Exercise with Load, DIP Switch S1, Actuator 8 on
Push Button
SET ENGINE
EXERCISER
hold 5 sec.
8
Exercise without Load, DIP Switch S1, Actuator 8 off
How to Set Built–In Timer
Function
Explanation
blinks rapidly
FfFfFf
set exercise period
Exercise the generator now and
every week at this time hereafter.
Status Light
2
release
blinks slowly
FffFff
exercise period now active
3
press BYPASS
TIME DELAY
blinks slowly
FffFff
cancel active exercise period
4
—
F stays on
generator off
Generator starts and runs;
the load transfers to Emergency.
The load retransfers to Normal; then
generator runs for 5 minute cooldown
( light blinks slowly during cooldown ).
Exerciser enabled; repeats every 7 days.
NOTE: Every time SET ENGINE EXERCISER push button is pressed (held 5 seconds) the exercise period is changed.
5--1
CONTROL FEATURES (continued)
OPTIONAL PROGRAMMABLE ENGINE EXERCISER (Accessory 11CD)
The Accessory 11CD Programmable Engine Exerciser
incorporates a 7 day time base, and therefore, each day of
the week can be uniquely programmed to test the engine
generator set either with or without load. The proper
controller settings must be made to determine whether or
not the test will be conducted with or without load (refer
to page 5–1 for proper selection). For convenience, Block
Programming is also provided, whereby up to seven days
can be grouped together if the ON and OFF times are the
same.
The optional programmable engine exerciser provides
seven days of different exercise periods. The timer is
connected and mounted below the controller. A
permanent backup battery maintains the setting; when
power is lost to timer, output switch deenergizes.
DIP Switch Settings
8
5
Actuator
8 on
S2 DIP
SWITCH
Actuator
5 off
Actuator
5 on
5
8
Exercise
with
Load
Actuator
8 off
7
Opt. Timer
Enabled
Opt. Timer
Disabled
Exercise
without
Load
S1 DIP
SWITCH
Actuator
7 off
Actuator
7 off
7
FUNCTION
See next page for instructions on setting the timer.
Shaded DIP switches are standard factory settings.
5--2
CONTROL FEATURES (continued)
How to Set Optional Programmable Engine Exerciser (Accessory 11CD)
Proceed with care! The automatic transfer
switching equipment is energized.
Press Button
Display
Meaning
1
reset
1234567 (blink)
00 00
¬ f
after self-test,
clears memory
2
hold h, then
press ±1h
↓
Note
3
1234567
AM 12 00
¬ f
hold ¬ while
setting thru
step 7
4
±1h once
(if Daylight
Saving Time)
±1h
do nothing if it
is Standard
Time.
5
h (hold for
fast count)
[00] 00
hour
6
m (hold for
fast count)
00 [00]
minute
Day
Mo Tu We Th Fr
Sa Su
day
release ¬
: blinking
time & date set,
clock starts
7
8
day
button
Figure 5-2. Exerciser display and push buttons
Changing or Checking Time Programs
By operating the Prog. button, the individual commands
as programmed can, at any time, be brought consecutively
into the display for revision or checking. Revisions are
accomplished by programming over the existing programs
using the steps at the left.
Canceling Time Programs
After the selecting the desired program, use the h and
m buttons to set hours and minutes to zero; the ––:–– will
be displayed. This program has been made ineffective
and will no longer be carried out. To cancel all programs,
press the Res. (reset) button. This clears all memory
including the time base and program storage.
Programming Engine On-Off Period(s)
Step
Press Button
Display
Meaning
1
Prog.
(do not hold)
1234567
–– : ––
begin
2
hand
¬
on
3
h
start hour
4
m
start minute
5
Day
start day
Note
Manual Override
Do not manually override the exerciser unless you
are sure that the controller has been set for
exercise without load (see page 5–2). Failure to do
so could result in possible injury if the transfer
switch operates while the enclosure door is open.
start engine
g
Successive pressing displays blocks of days:
Mon–Sat, Mon–Fri, Sat & Sun (1 is Monday)
Prog.
1234567
–– : ––
begin
7
Press hand
(2 times)
f
off
8
h
stop hour
9
m
stop minute
10
Day
stop day
11
¬
: blinking
6
minute
button
clock
button
military 24 hr
or AM/PM
12 hr time
1234567 (blink)
00 00
¬ f
hour
button
display
Repeat step 2 to toggle between
military (blank display) and AM/PM time.
hold ¬
(clock symbol)
±1h
button
program
button
Setting the Clock (Time and Day)
Step
on/off button
reset
button
stop
p engine
g
Step
Press Button
Display
Meaning
1
hand
¬ hand
on
2
hand
[¬]
permanent on
3
hand
[f]
permanent off
4
hand
¬ f
back to automatic
Daylight Savings / Standard Time Change
To change to Daylight Savings time (Summer time), press the
¦1h button once. Clock advances by one hour and +1h
appears in display.
To change to Standard Time (Greenwich mean time in UK,
Middle European time in Germany), press the ¦1h button
again; the clock sets back one hour and +1h disappears.
program set
5--3
CONTROL FEATURES (continued)
INPHASE MONITOR
FOR MOTOR LOAD TRANSFER
LOAD DISCONNECT FEATURE
Connect external circuits to the terminals indicated on
the Wiring Diagram provided with the ATSE.
Inphase monitoring logic controls transfer and retransfer
of motor loads, so that inrush currents do not exceed
normal starting currents. It avoids nuisance tripping of
circuit breakers and mechanical damage to motor
couplings.
The double throw (Form C) contact is rated for 28 VDC
or 120 VAC (5 amps resistive). The contact operates prior
to a selectable 0, 3, 10, or 20 second delay before transfer
of the automatic transfer switching device. The contact
resets either immediately following transfer or after the
same delay as set for pre–signal before transfer.
The Motor Load Transfer feature is built into the
controller. DIP switch S1 (actuator 5) activates this
feature: right = ON, left = OFF.
FUNCTION
Time delay between the load disconnect control signal
and initiation of transfer is set on the controller with DIP
switch S2 (actuators 6, 7, 8) as shown below:
S1 DIP SWITCH
disable
Actuator 5 off
Delay Before Transfer
5
Actuator 5 on
5
enable
LD TDBT
0 (disable)
3 seconds
10 seconds
7 8
20 seconds
7 8
If the Motor Load Transfer feature is enabled,
it will be activated following the Load
Disconnect Feature Delay Before Transfer
delay.
7 8
Note
S2 DIP SWITCH
Actuator 7 on
Actuator 8 on
Actuator 7 on
Actuator 8 off
Actuator 7 off
Actuator 8 on
Actuator 7 off
Actuator 8 off
7 8
Shaded DIP switches are standard factory settings.
Shaded DIP switches are standard factory settings.
Delay After Transfer*
LD TDAT
S2 DIP SWITCH
enable
Actuator 6 on
6
disable
Actuator 6 off
6
*Enabling the Delay After Transfer will cause the control
signal to reset after the same delay as set for the Delay
Before Transfer.
REMOTE CONTROL FEATURES
These remote control features require a customer–supplied normally closed contact suitable for a 5 V dc low energy
circuit. Refer to the Wiring Diagram provided with the ATS. Activate appropriate DIP switch S2 actuators below.
Remote Test (terminals CP6–7)
RTSW
Remote Transfer to Emergency (CP8–9)
S2 DIP SWITCH
enable
Actuator 2 off
2
Actuator 3 off
Bypass Transfer Time Delay (CP12–13)
TD E/N BYP.
Inhibit Transfer to Emergency (CP10–11)
S2 DIP SWITCH
Actuator 4 on
enable
Actuator 4 off
4
Actuator 1 off
disable
4
enable
S2 DIP SWITCH
1
Actuator 1 on
N/E INHIB.
1
disable
S2 DIP SWITCH
Actuator 2 on
2
enable
RT /E
disable
3
Actuator 3 on
3
disable
5--4
INDEX
A
F
P
accessories, 5–2, 5–3, 5–4
failure
see trouble-shooting, 3–2
parts, 3–1
auxiliary circuits, 1–3
features, see control features
programmable engine exerciser,
5–2, 5–3
B
barriers, 1–2
battery, 4–2, 5–1
buttons, push, 3–1
bypass time delay, 1–5, 2–1, 3–1
C
catalog number, inside cover
cleaning, 3–1
conductors
preparation, 1–2
terminals, 1–2
connections
engine control contact, 1–2
power, 1–2
control features, 5–1
load disconnect, 5–4
motor load transfer, 5–4
plant exerciser, 5–1
controller (control panel), 4–1, 4–2
codes, cover
cover removal, 4–2
disconnecting, 3–1
time delay potentiometers, 4–2
D
DIP Switches, 4–1, 4–2, 5–1, 5–2,
5–4
E
electrical operation, 1–5
engine exerciser, 5–1, 5–2, 5–3
engine starting contacts, 1–2
Printed in U.S.A.
frequency, pickup and dropout
settings, 4–1
functional test, 1–3, 1–4, 1–5
H
harness, 1–1
disconnect plugs, 3–1
HELP
800–800–2726 (ASCO)
customercare@asco.com
I
problem, 3–2
R
remote control features, 5–4
bypass transfer time delay, 5–4
inhibit transfer to emergency,
5–4
remote test, 5–4
remote transfer to emergency,
5–4
replacement parts, 3–1
S
inspection, 3–1
service
800–800–2726 (ASCO)
customercare@asco.com
installation, 1–1
set engine exerciser, 5–1
inphase monitor, 5–4
L
labels,
rating, cover
lights, 1–5, 5–1
load disconnect feature, 5–4
lubrication, 3–1
M
settings
changing, 4–1
factory, 4–1
frequency, 4–1
phase, 4–1
time delay, 4–1
voltage, 4–1
T
terminal block, 1–3
maintenance, preventive, 3–1
test, functional, 1–3, 1–4, 1–5
manual load transfer, 3–2
warning, 3–2
time delay
adjustment, 4–1
gen–set cooldown, 4–1
how to change, 4–2
override momentary outages, 4–1
settings, 4–1
transfer to emergency, 4–1
transfer to normal, 4–1
manual operation, 1–3
illustration of, 1–3
warning, 1–3
motor load transfer feature, 5–3
N
nameplate, cover
O
operation
electrical, 1–5
manual, 1–3
illustration of, 1–3
warning, 1–3
sequence of, 2–1
timer (plant exerciser), how to set,
5–1
transfer switch test, 1–5, 3–1
trouble–shooting, 3–2
inphase monitor, 5–4
V
voltage, phase, 4–1
voltage, pickup and dropout settings, 4–1
E 2011 ASCO Power Technologies, L.P.