Honeywell CSS-O-A300-001 User manual

IND.CONT.EQ.
3JHX
PRODUCT DATA
63-2651—1
Solid Core and Split Core Adjustable
Current “Status” Switches
CSS-O, CSS-C; CSP-O, CSP-C
FEATURES
• Very low operating trip points
• LED status indication
• Integral DIN rail mounting flange
• Easy wiring, non-polarity sensitive
• Accepts up to a 350 MCM (17.3 mm) cable
• Operates up to 200 or 250 continuous amps
• RoHS and WEEE compliant
• Limited five year warranty
DESCRIPTION
The CSS solid core and the CSP split core current switches
have either Normally-Open (N.O.) or Normally-Closed (N.C.)
output configurations. All of these sensors will have a solid-
state output with an adjustable trip point (setpoint). These
current switches are ideal for providing status information on
any type of AC current using equipment. The CSS series
current switches are an excellent choice for new installations.
The CSP series current switches are ideal for retrofit or
existing installations since it is not necessary to power down
the unit and disconnect any wires during the installation
process. The CSS and CSP current switches are accurate,
reliable, easy to install and require 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/slippage or mechanical failure. Any
time one of these events occur the current can significantly
increase or decrease, thus tripping the sensor and notifying
building management of an alarm condition.
The CSS and CSP series current switches can be used to
monitor devices with a maximum continuous operating current
of up to 200 or 250 Amps depending on the model. These
switches will not need to be externally powered since the
power for the switch is induced from the conductor being
monitored. Another great feature of the CSS and CSP series
current switches is that they include both a red and green LED
that will indicate the “Status” of the switch contacts. All of
these units come with a unique 1-3/8 in. (35 mm) DIN rail
mounting flange and a limited five year warranty.
Contents
Features ............................................................................1
Description ........................................................................1
Specifications ....................................................................2
Ordering Information .........................................................2
Safety ................................................................................4
Installation .........................................................................4
Troubleshooting.................................................................6

SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
63-2651—1 2
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE®wholesaler or distributor, refer to the
TRADELINE®Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
SPECIFICATIONS
Sensor Power: Induced from monitored conductor
Amperage Rating: 0 to 200 Amps and 0 to 250 Amps
(See Table 1)
Operating Frequency Range: 40 Hz to 1 kHz
Isolation Voltage: 2220 Vac
Max Sensing Current Voltage: 600 Vac
Output Switch Rating:
CSS-O; CSP-O: 0.3 Amps @ 200 Vac/Vdc
CSS-C; CSP-C: 0.15 Amps @ 300 Vac/Vdc
Adjustable Trip Point (Setpoint): 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)
Operating RH Range: 0 to 95% RH, non-condensing
Agency Approvals:
CE, UL
Environmental Compliance:
RoHS-Directive 2002/95/EC
WEEE-Directive 2002/96/EC
NOTE: DO NOT use the LED’s to indicate whether the
sensors have power applied to them.
Table 1. Operating Specifications
Product Number Core Type
Normal
Position
Adjustable Trip
Point
Output Switch
Rating
Max. Current
Cont.
Max. Current
for 6 secs.
Max. Current
for 1 sec.
CSS-O-A300-001 Solid N.O. 1.0-250 Amps 0.30 Amps @
200 Vac/Vdc
250 Amps 500 Amps 1,000 Amps
CSS-O-A200-001 Solid N.O. 0.5-250 Amps 0.30 Amps @
200 Vac/Vdc
250 Amps 500 Amps 1,000 Amps
CSS-C-A300-001 Solid N.C. 1.0-250 Amps 0.15 Amps @
300 Vac/Vdc
250 Amps 500 Amps 1,000 Amps
CSP-O-A300-001 Split N.O. 3.0-200 Amps 0.30 Amps @
200 Vac/Vdc
200 Amps 400 Amps 800 Amps
CSP-O-A200-001 Split N.O. 2.0-200 Amps 0.30 Amps @
200 Vac/Vdc
200 Amps 400 Amps 800 Amps
CSP-C-A300-001 Split N.C. 3.0-250 Amps 0.15 Amps @
300 Vac/Vdc
250 Amps 500 Amps 1,000 Amps
CSP-C-A200-001 Split N.C. 2.5-250 Amps 0.15 Amps @
300 Vac/Vdc
250 Amps 500 Amps 1,000 Amps

SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
363-2651—1
Fig. 1. CSS current sensor dimensions in inches (mm)
Fig. 2. CSP current sensor dimensions in inches (mm)
13/32 (10)
25/32
(20)
FRONT VIEW RIGHT SIDE VIEW
LEFT SIDE VIEW
TOP VIEW
TERMINAL
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
M23580
A
ADJ
TRIP
Adj. Range: 2.0-250A
TRIP ON = Above Trip Point
Output: 0.3A @
200 VDC/VAC
ONOFF
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)
49/64
(19)
2-45/64
(69)
1-5/64 (25)
TERMINAL
BLOCK

SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
63-2651—1 4
SAFETY
WARNING
For CSS-O,C ensure that all power sources are
disconnected and locked out before installation as
severe injury or death may result from electrical
shock due to contact with high voltage wires.
CAUTION
This product is not intended to be used for life or
safety applications.
CAUTION
This product is not intended for use in any
hazardous or classified locations.
INSTALLATION
Make sure that all installations are in compliance with all
national and local electrical codes. Only qualified individuals
that are familiar with codes, standards and proper safety
procedures for high voltage installations should attempt
installation. The current switches will not require external
power, since the power for the current switch is induced from
the conductor being monitored.
WARNING
Never rely on the LEDs to determine whether
power is present at the current switch. The red
LED will indicate whether the current is above the
adjustable trip point. The green LED will indicate
whether the current 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
devices, such as contactors and transformers.
For applications in which the normal operating current is
below the 0.8/2.0 Amps trip point (See Fig. 5), the conductor
being monitored may be looped through the sensor 6/12 times
giving you a total operating current of 6/12 times the original
current.
Example:
A small fan operating at 0.2 Amps can be wrapped through
the sensor 6 times to give you a total operating current of
1.2 Amps flowing through the CSS-O-A300-001. Another
option is to use CSS-O-A200-001.
A small fan operating at 0.2 Amps can be wrapped through
the sensor 16 times to give you a total operating current of
3.2 Amps flowing through the CSP-O-A300-001. Another
option is to use the CSP-O-A200-001.
Fig. 3. Sensor placed on DIN rail
Fig. 4. Sensor removed from DIN rail
Fig. 5. Wires through sensors
C
R
UL
US
3X
M25289
3X
M25290
C
R
UL
US
M25291
U
R
C
L
US
U
R
C
L
US

SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
563-2651—1
WARNING
The secondary of the 5 amps current transformer
must be shorted together before the power may be
turned on to the monitored device.
For applications in which the normal operating current is
greater than 250 Amps or for conductor diameters larger that
3/4 in. (19 mm) in diameter, and external 5 Amps Current
Transformer (C.T.) must be used as shown in Fig. 6.
Fig. 6. Current transformer
Latch Operation
Pressing down on the two (2) side tabs and swinging the cover
open opens the split core current switch as shown in Fig. 7.
Lifting up the latch with a flat-tip screwdriver as shown in Fig. 8
can also open the unit. Press down firmly on the cover to close
the current switch. An audible “click” will be heard as the tab
slides over the tongue on the base.
CAUTION
Mating surfaces of the magnetic core are exposed
when the sensor is open. Silicone grease, present
on the cores to prevent rust, can capture grit and
dirt if care is not exercised. Operation can be
impaired if anything prevents good contact
between 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 between the current switches and the Building
Management System or controller.
NOTE: When using a shielded cable, be sure to connect only
(1) end of the shield to ground at the controller. Con-
necting both ends of the shield to the ground may
cause a ground loop.
When removing the shield from the sensor end, make sure to
properly trim the shield so as to prevent any chance of
shorting. The current switch output terminals represent a solid-
state switch for controlling AC and DC loads and is not polarity
sensitive. The recommended torque to be used on the terminal
block connections is 5.93 in-lbs. (0.67 Nm). The aperture (hole)
size of the current switch is 3/4 in. (19 mm) and will accept a
EXAMPLE: FOR CURRENTS UP TO 600 AMPS, USE A 600:5 RATIO C.T.
AS SHOWN.
INSULATED CONDUCTOR
600:5 RATIO 5A C.T.
WIRE NUT
M25295A
C
U
R
L
US
CUS
R
UL
M25298
M25299
CUS
R
UL

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

SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
763-2651—1

Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9
customer.honeywell.com
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
® U.S. Registered Trademark
© 2007 Honeywell International Inc.
63-2651—1 C.H. Rev. 06-07
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