Dwyer | Series SSCS | Instruction manual | Dwyer Series SSCS Instruction Manual

Dwyer Series SSCS Instruction Manual
Bulletin PC-SSCS
Series SSCS Sure-Set Current Switches
®
Specifications - Installation and Operating Instructions
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The SERIES SSCS Sure-Set Current Switch provides a unique approach to calibration
and installing current sensors in a low cost, fast, and accurate design. Selecting the set
point has never been easier, with each model having 9 pre-configured adjustable HP
set points. This feature eliminates the need to work within a live enclosure, reducing
the risk of arc flash on installation.
Risk of Electrical Shock or Arc Flash
Disconnect power supply before making electrical connections.
Contact with components carrying hazardous voltage can cause electrical shock
and may result in severe personal injury or death.
WARNING
SPECIFICATIONS
Output: Isolated, NO.
Power Requirements: None, self-powered.
Temperature Limits: 5 to 140°F (-15 to 60°C).
Humidity Limits: 0 to 95%, non-condensing.
Isolation Voltage: 600 VAC RMS.
Frequency: 50/60 Hz.
Enclosure Rating: UL 94 V-0 flammability rated, ABS plastic housing.
Agency Approvals: CE, cULus.
SELECTING OPERATING RANGE
1. Verify the motor Full Load HP for the system being monitored.
2. Verify the motor operating voltage.
3. Verify that the proper SSCS model was selected to monitor the motor used in the
system. (SSCS Current Switches are available for 230 VAC and 480 VAC motors,
both in low and high HP ranges.)
4. Set the SSCS operating set point to the motor Full Load HP by rotating the range
selector switch on top of the switch to the proper motor HP. The SSCS operating set
point is now set to properly monitor the motor operation. No calibration on a live load
is necessary.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219/879-8000
www.dwyer-inst.com
Fax: 219/872-9057
e-mail: info@dwyermail.com
INSTALLATION
Mounting
1. Shut off all power to the enclosure prior to installing.
2. Remove the mounting bracket from the main housing.
3. Using the two included screws, attach the mounting bracket to the rear of the
electrical panel or enclosure.
4. Re-attach the current switch housing to the plastic mounting bracket.
TROUBLESHOOTING
Symptom
SSCS solid state output does
not change state when motor
current is changed.
Wiring
1. Disconnect power to the conductor cable from the power source prior to proceeding.
2. Open the core using the release tab. Snap the core closed around the power
conductor cable. Make sure that the core release tab is locked in its original position.
3. Wire the Series SSCS output terminals to the control box Digital Input (DI) terminal
(30 V maximum terminal voltage).
4. Close the enclosure and reconnect power to the power conductor cable. (For wiring
example, see Figure 1)
Action
Insufficient current to the load to reach the selected
set point threshold.
Incorrect motor HP range selected. Verify that the
SSCS range selector switch is set to the proper
motor FLA.
Incorrect SSCS model chosen. Check the motor Full
Load HP against the SSCS HP ranges.
Check that the proper SSCS model was chosen for
the motor operating voltage.
Motor is turned on and
switch does not close.
The clamp is not fully closed. Press the SSCS housing to ensure the clamp latch is fully closed. Verify
that the conductor is within range of the conductor
sizes that can be accommodated by the SSCS.
Verify that the range selector switch is set to the
proper motor FLA.
CONTACTOR
MAINTENANCE/REPAIR
Upon final installation of the Series SSCS Sure-Set Current Switches, no routine
maintenance is required. The Series SSCS is not field serviceable and should
be returned if repair is needed. Field repair should not be attempted and may void
warranty.
DI
WARRANTY/RETURN
Refer to “Terms and Conditions of Sale” in our catalog and on our website. Contact
customer service to receive a Return Goods Authorization number before shipping the
product back for repair. Be sure to include a brief description of the problem plus any
additional application notes.
MOTOR
FAN OR PUMP
Figure 1
©Copyright 2015 Dwyer Instruments, Inc.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Printed in U.S.A. 12/15
FR# 444196-00
Phone: 219/879-8000
www.dwyer-inst.com
Fax: 219/872-9057
e-mail: info@dwyermail.com
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