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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

Summary of Contents for CSS-O-A300-001

Page 1: ... less servicing than differential pressure switches flow switches and paddle wheels These current switches should be used in applications in which a current switch with adjustable trip point is required A current switch can be used to monitor fan and pump status motors compressors and electrical equipment for proper operation A change in the operating current may indicate motor failure belt loss s...

Page 2: ...t See Table 1 Hysteresis Dead Band 10 Setpoint typical Status Indication Red LED Above Trip Point Green LED Below Trip Point Aperture Hole Size 3 4 in 19 mm Accepts up to 350 MCM 17 3 mm cables Dimensions See Figures 1 and 2 DIN Rail Size 1 3 8 in 35 mm Unit Weight CSS 0 21 lb 0 1 kg CSP 0 23 lb 0 1 kg Enclosure Rating Color UL94 5VB Burgundy Operating Temperature Range 5 to 104 F 15 to 40 C Opera...

Page 3: ...RMINAL BLOCK 13 64 5 TYP ON TRIP 2 27 32 72 M23581A 3 3 8 86 1 3 8 35 9 64 4 2 17 64 58 63 64 25 OUTPUT 0 3A 200 VDC VAC ADJ TRIP TRIP ON ABOVE TRIP POINT TRIP OFF ADJ RANGE 0 8 250A FRONT VIEW RIGHT SIDE VIEW LEFT SIDE VIEW TOP VIEW M23580A ADJ TRIP Adj Range 2 0 250A TRIP ON Above Trip Point Output 0 3A 200 VDC VAC ON OFF TRIP TRIP 1 2 13 2 27 32 72 7 32 6 TYP 3 21 64 85 1 3 8 35 9 64 4 3 4 19 4...

Page 4: ...is below the adjustable trip point IMPORTANT The current switch should be used on insulated con ductors only The current switch may be mounted in any position using the 2 8 x 3 4 in 19 mm Tek screws and the mounting holes in the base or snapped directly on to the 1 3 8 in 35 mm DIN rail See Figures 3 and 4 Leave a minimum distance of 1 in 25 mm between the current switch and any other magnetic dev...

Page 5: ...etween pole pieces Visually check the mating parts of the core before closing the current sensor Fig 7 Opening sensor by hand Fig 8 Opening with a screwdriver Wiring Honeywell recommends the use of a 2 conductor 16 to 22 AWG 1 3 to 0 3 mm2 shielded cable or twisted wire copper wire only for all current switch output applications A maximum wire length of less than 98 4 feet 30 meters should be used...

Page 6: ... 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...

Page 7: ...SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT STATUS SWITCHES 7 63 2651 1 ...

Page 8: ...ITCHES U S Registered Trademark 2007 Honeywell International Inc 63 2651 1 C H Rev 06 07 By using this Honeywell literature you agree that Honeywell will have no liability for any damages arising out of your use or modification to the literature You will defend and indemnify Honeywell its affiliates and subsidiaries from and against any liability cost or damages including attorneys fees arising ou...

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