SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
63-2651—1
6
maximum cable diameter of 350 MCM (17.3 mm). See Fig. 9
for use as a digital input to a building management system and
Fig. 10 for use as a pilot relay application.
Fig. 9. Digital circuit
Fig. 10. Analog circuit
Calibration of Adjustable Trip Point
The adjustable current switch has an operating range of 0-250
Amps. Do not exceed! The adjustable current switch comes
with its fifteen-turn adjustable potentiometer set counter-
clockwise
to its maximum position. The adjustable
current switch can monitor Under load, Normal load and
Overload conditions, depending on how it's set. The procedure
below is for Normal load condition for part numbers CSS-O-
A300-001 and CSS-O-A200-001.
Normal loads
With power on and the adjustable current switch on the proper
range, turn the fifteen-turn adjustment potentiometer clockwise
until the red LED turns on and stop immediately. The
adjustment switch is now tripped. The adjustable current
switch Hysteresis (Dead Band) is 10% of the trip point typically.
TROUBLESHOOTING
Table 2. Resistance Readings For Good Unit.
DIGITAL INPUT #1
BUILDING MANAGEMENT
SYSTEM
M25302
RELAY
CONDITIONER
24 VAC COIL
120 VAC
LINE
DI
(STATUS)
M23933
DDC CONTROLLER
DO
(RELAY COIL OR
CONTACTOR)
24 VAC COIL
TRANSFORMER
Problem
Solution
Red LED is on but the current
switch didn’t activate.
Disconnect the wires from the current switch output. Measure the resistance across the
contacts with an Ohmmeter. See Table 2 below for resistance readings for a good unit.
Red LED didn’t turn on and the
current switch didn’t activate
Verify that the conductor you are monitoring is above the adjustable trip point. If the sensor is
monitoring less than the adjustable trip point, looping the wire may be required. See Fig. 5.
Sensor doesn’t switch at all,
regardless of current level.
Adjustment potentiometer is probably set to its maximum or minimum position. Turn the
potentiometer clockwise all the way and verify if the LED switches from red to green.
Product Number
Resistance if switch is open
Resistance if switch is closed
CSS-O-A300-001
Greater than 1 Meg ohms
Approximately 2 ohms
CSS-O-A200-001
Greater than 1 Meg ohms
Approximately 2 ohms
CSS-C-A300-001
Greater than 1 Meg ohms
Approximately 12 ohms
CSP-O-A300-001
Greater than 1 Meg ohms
Approximately 2 ohms
CSP-O-A200-001
Greater than 1 Meg ohms
Approximately 2 ohms
CSP-C-A300-001
Greater than 1 Meg ohms
Approximately 12 ohms
CSP-C-A200-001
Greater than 1 Meg ohms
Approximately 12 ohms
