Dwyer CCS - Manual (Page 2)

INCREASING MEASURED CURRENT
If measured current is too low to be detected:
Wrap the conductor (wire) through the sensing hole and around the CCS body to
produce multiple turns to increase the measured current. Use the below equation to
determine how many wraps are necessary:
Measured current = actual current x the number of turns.
Failure to derate the current capacity could result in damage to the
Series CCS when using multiple turns to increase the measured
current. Use the following formula to determine the new maximum current:
New maximum current = CCS current rating / number of turns.
For example, with 4 turns and a maximum current rating of 200 A: New maximum
current = 200 A / 4 = 50 A.
SET POINT CALIBRATION (For adjustable models only)
The output switch of all devices is open. When the monitored current exceeds the trip
value as set by the set point calibration, the switch will close. The red LED light will
indicate that this change has occurred.
Series CCS current switches are factory set at the minimum switch point (adjustment
fully clockwise).
To increase the set point:
Use the potentiometer to adjust the range:
• Confirm that the monitored load is on.
• Turn the adjustment counter-clockwise, until the output turns off as indicated by the
red LED.
• Then turn the adjustment clockwise, until the red LED comes back on indicating that
the output is now on.
The adjustment should be turned slightly clockwise past a certain
point to ensure normal line current variations do not cause false
conditions.
TROUBLESHOOTING
MAINTENANCE
Upon final installation of the Series CCS Current Switches, no routine maintenance is
required. A periodic check of system calibration is recommended. The Series CCS is
not field serviceable and should be returned if repair is needed (field repair should not
be attempted and may void warranty). Be sure to include a brief description of the
problem plus any relevant application notes. Contact customer service to receive a
return of goods authorization number before shipping.
Symptom
Series CCS output does not function.
Set point potentiometer keeps turning.
Motor (or other equipment using current)
is turned on and switch does not close.
Solution
• Verify that the maximum amperage range has not been exceeded.
Voltages or currents above the rated levels may damage the Series
CCS.
• Turn the potentiometer counterclockwise, to return the unit to its
original setting. Start the calibration procedure again.
• Insufficient current to the load leads to reach the set point
threshold. To turn switch on, follow the instructions if current is too
low to be detected.
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
©Copyright 2011 Dwyer Instruments, Inc. Printed in U.S.A. 4/11 FR# R6-443838-00 Rev.1
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