Honeywell CSS-O-A300-001, CSS-O-A200-001, CSS-C-A300-001, CSP-O-A300-001, CSP-C-A300-001 User Manual
...
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
PRODUCT DATA
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 solidstate 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
IND.CONT.EQ.
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63-2651—1
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
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
Table 1. Operating Specifications
Product Number Core Type
CSS-O-A300-001 Solid N.O. 1.0-250 Amps 0.30 Amps @
CSS-O-A200-001 Solid N.O. 0.5-250 Amps 0.30 Amps @
CSS-C-A300-001 Solid N.C. 1.0-250 Amps 0.15 Amps @
CSP-O-A300-001 Split N.O. 3.0-200 Amps 0.30 Amps @
CSP-O-A200-001 Split N.O. 2.0-200 Amps 0.30 Amps @
CSP-C-A300-001 Split N.C. 3.0-250 Amps 0.15 Amps @
CSP-C-A200-001 Split N.C. 2.5-250 Amps 0.15 Amps @
Normal
Position
Adjustable Trip
Point
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
Output Switch
Rating
200 Vac/Vdc
200 Vac/Vdc
300 Vac/Vdc
200 Vac/Vdc
200 Vac/Vdc
300 Vac/Vdc
300 Vac/Vdc
sensors have power applied to them.
Max. Current
Cont.
250 Amps 500 Amps 1,000 Amps
250 Amps 500 Amps 1,000 Amps
250 Amps 500 Amps 1,000 Amps
200 Amps 400 Amps 800 Amps
200 Amps 400 Amps 800 Amps
250 Amps 500 Amps 1,000 Amps
250 Amps 500 Amps 1,000 Amps
Max. Current
for 6 secs.
Max. Current
for 1 sec.
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE
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
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.
63-2651—1 2
®
Catalog or price sheets for complete ordering number.
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
A
TOP VIEW
TERMINAL
BLOCK
13/32 (10)
LEFT SIDE VIEW
1/2 (13)
TRIP
TRIP
ON
TRIP
OFF
ADJ
TRIP ON = ABOVE TRIP POINT
ADJ. RANGE: 0.8-250A
OUTPUT: 0.3A @
200 VDC/VAC
13/64 (5)
TYP.
2-27/32 (72)
FRONT VIEW
25/32
(20)
9/64 (4)
1-3/8 (35)
3-3/8 (86)
Fig. 1. CSS current sensor dimensions in inches (mm)
TOP VIEW
TRIP TRIP
TRIP
ON OFF
ADJ
TRIP ON = Above Trip Point
Adj. Range: 2.0-250A
Output: 0.3A @
200 VDC/VAC
7/32 (6)
TYP.
RIGHT SIDE VIEW
63/64 (25)
2-17/64
(58)
M23581A
TERMINAL
BLOCK
LEFT SIDE VIEW
2-27/32 (72)
FRONT VIEW
3/4
(19)
49/64
(19)
RIGHT SIDE VIEW
9/64 (4)
1-3/8 (35)
3-21/64 (85)
Fig. 2. CSP current sensor dimensions in inches (mm)
1-5/64 (25)
2-45/64
(69)
M23580
3 63-2651—1
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
WARNING
CAUTION
CAUTION
WARNING
SAFETY
3X
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.
This product is not intended to be used for life or
safety applications.
This product is not intended for use in any
hazardous or classified locations.
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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.
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 conductors 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.
Fig. 3. Sensor placed on DIN rail
3X
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Fig. 4. Sensor removed from DIN rail
M25289
M25290
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.
63-2651—1 4
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Fig. 5. Wires through sensors
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M25291
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
WARNING
CAUTION
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M25298
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.
INSULATED CONDUCTOR
600:5 RATIO 5A C.T.
WIRE NUT
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.
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.
EXAMPLE: FOR CURRENTS UP TO 600 AMPS, USE A 600:5 RATIO C.T.
AS SHOWN.
Fig. 6. Current transformer
Fig. 7. Opening sensor by hand
M25295A
Wiring
Honeywell recommends the use of a 2 conductor 16 to
22 AWG (1.3 to 0.3 mm
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.
2
) shielded cable or twisted wire,
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Fig. 8. Opening with a screwdriver
M25299
NOTE: When using a shielded cable, be sure to connect only
(1) end of the shield to ground at the controller. Connecting 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 solidstate 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
5 63-2651—1
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
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
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
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 counterclockwise 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-OA300-001 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.
Fig. 10. Analog circuit
TROUBLESHOOTING
Problem Solution
Red LED is on but the current
switch didn’t activate.
Red LED didn’t turn on and the
current switch didn’t activate
Sensor doesn’t switch at all,
regardless of current level.
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
63-2651—1 6
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.
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.
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.
Table 2. Resistance Readings For Good Unit.
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
7 63-2651—1
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
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 out of, or resulting from, any modification to the literature by you.
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
® U.S. Registered Trademark
© 2007 Honeywell International Inc.
63-2651—1 C.H. Rev. 06-07
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