Johnson Controls CSDECM-ADJ Series User manual

CSDECM-ADJ Series ECM Adjustable Current
Switch Installation Guide
Introduction
An electrically commutated motor (ECM) has an energy
saving capability for applications that do not require
the motor to always run at full speed. This enables the
equipment to reduce the speed of the motor.
Figure 1: CSDECM-ADJ0 ECM Current Switch
DANGER
Failure to follow these instructions can result in
death or serious injury.
Hazard of electrical shock, explosion, and arc flash.
Important:
• Follow all requirements in NFPA 70E for safe work
practices and for personal protective equipment
(USA) and other applicable local codes when you
install this product.
• Only qualified electrical personnel should install
this product.
• Read, understand, and follow all instructions
thoroughly.
• Install only on insulated conductors.
• Lock out and tag all power sources prior to
installation. Use a correctly rated voltage sensing
instrument to determine that no voltage is
present.
WARNING
Failure to follow these instructions may result in
death or serious injury.
Automated equipment may start without warning.
Equipment monitored or operated by this device may start
without warning. Keep clear of apparatus at all times.
Important:
• This product is not intended for life-safety
applications
• Do not install in hazardous or classified locations
• The installer is responsible for all applicable codes
• You must install this product in a suitable electrical
enclosure
Calibration and operation
The standby current draw of an ECM from the on-board
electronics ranges from 250 mA to 500 mA and varies by
manufacturer. This standby current can sometimes cause
a sensitive current sensor to be ON even when the motor
is not running, which gives a false indication. To prevent
this, the turn-on current of the current sensor must be
higher than the ECM standby current.
The Johnson Controls® adjustable turn-on ECM Current
Switch enables you to set or adjust the appropriate turn-
on threshold for your application. Set the dial so that the
turn-on current is slightly higher than the ECM standby
current.
Figure 2: ECM sensor output
Callout Description
A ECM monitored load
B ECM sensor setpoint, adjustable to prevent
detection of standby current
C Energized
D Sensor output
E Unloaded ECM inverter, for example 120 mA
On startup, the sensor output closes when the monitored
current exceeds the dial setting, and opens if the
monitored current is below the dial setting minus the
fixed hysteresis value of the current switch. For motors
with an expected running current of 0.5 A or less, you
may need several wraps of the conductor to enable the
CT to adequately read the difference between the standby
current and a run state.
LIT-12013530
2023-02-02
CSDECM, CRCSDP

Installation
CAUTION
Disconnect, lock out, and tag out all power
supplies during installation.
To install the CSDECM-ADJ Series ECM Adjustable Current
Switch, complete the following steps:
1. Determine the mounting location for the sensor
near the conductor to be monitored. Locate
the sensor at least 0.5 in. (1.27 cm) from any
uninsulated conductor.
2. The sensor features a flexible iris that enables the
sensor to hang on the conductor if local codes
permit. A bracket is included for screw mounting or
attaching to a DIN rail. For screw mounting, use the
bracket as a template and drill two 0.9 in. (2.3 cm)
pilot holes. Ensure no drill shavings are present in
the enclosure.
3. Attach the bracket with the provided screws.
4. Clamp the sensor around the insulated conductor
only. The monitored maximum is 600 VAC.
5. Snap the sensor into the mounting bracket.
6. Wire the output of the sensor to a control panel
digital input loop not to exceed 30 VAC/VDC
wetting voltage. Tighten the terminals to 3.5 in-lb
(8.9 cm-kg).
Wiring
The following figure shows the wiring setup.
Note: The device is not polarity sensitive.
Figure 3: Wiring
Callout Description
A Controller (sinking)
B Insulated primary AC conductor 600 VAC max
C Set the knob to the required turn-on
D Alternate controller arrangement (AC)
E Alternate controller arrangement (sourcing)
Figure 4: Wire wrap for smaller motors and loads
Note: A small load is a load that is outside of the
measurement range.
CSDECM-ADJ Series ECM Adjustable Current Switch Installation Guide2

Setup
Important: Follow all safety precautions outlined
in this installation guide. Follow all requirements in
NFPA 70E for safe work practices and for personal
protective equipment (USA) and other applicable
local codes when you install this product. Read all
warnings carefully.
The dial is a continuous sweep that enables fine-tuning.
To set up the CSDECM-ADJ Series ECM Adjustable Current
Switch, complete the following steps:
1. When installed on the ECM conductor with the
motor stopped but powered on, verify the open
LED is on. If the open LED is off, adjust the dial
clockwise until the open LED is on.
2. Turn the dial counter-clockwise until the closed LED
is on. This is the turn-on current or approximate
value of the ECM standby current.
3. Turn the dial clockwise until the closed LED is off
and continue clockwise slightly to give a margin of
operation between the on and off states. Leave the
dial at this setting and the current sensor setup is
complete.
Troubleshooting
See the following table for troubleshooting information.
Table 1: Troubleshooting steps
Symptom Causes Remedy
Current is below sensor minimum threshold Wrap monitored conductor turns
through sensor
Adjustment incorrect See Setup procedure
Testing with ohm meter yields incorrect results Solid state output may show
approximately 1 ohm or less
Sensor output does not
change state
Incorrect control wiring Ensure control loop voltage is present
CSDECM-ADJ Series ECM Adjustable Current Switch Installation Guide 3

Technical specifications
Table 2: ECM Current Switch technical specifications
Specification Description
Current range Dial setting 0.25 A to 3 A, 200 A max operational
Sensor output rating 1.0 A @ 30 VAC/VDC
Sensor output type N.O. 10 A @ 125 VAC, solid-state FET
Temperature rating 5°F to 140°F (-15°C to 60°C)
Insulation class 600V RMS. For use on insulated conductors only. Use minimum 167°F (75°C) insulated
conductor.
Sensor power Induced
Frequency range 50/60 Hz
Dimensions Height: 2.5 in. (6.35 cm) height without knob, 2.75 in. (7 cm) with knob
Width: 2.23 in. (5.67 cm)
Depth: 0.82 in. (2.08 cm), 1.4 in. (3.6 cm) on the optional relay model
Sensor aperture 0.75 in. (1.9 cm)
Compliance United States UL Listed, File NMTR.E493157, CCN 3PZS, Power Circuit
and Motor-mounted Apparatus, Under UL 60730-1,
Energy Management Equipment
Canada cUL Listed, File NMTR.E493157, CCN 3PZS, Power Circuit
and Motor-mounted Apparatus, Under CAN/CSA
E60730-1, Signal Equipment
Europe CE Mark – Johnson Controls declares that this product
is in compliance with the essential requirements and
other relevant provisions of the EMC Directive and RoHS
Directive.
Table 3: Command relay technical specifications
Description Specification
CRCSDP-NC-12 9 VDC to 12 VDC, 30 mA nominal
CRCSDP-NC-24 24 VAC/VDC, 30 mA nominal
CRCSDP-NO-12 9 VDC to 12 VDC, 30 mA nominal
Coil
CRCSDP-NO-24 24 VAC/VDC, 15 mA nominal
CRCSDP-NC-12
CRCSDP-NC-24
N.C. (1 form B)
CRCSDP-NO-12
Contact arrangement
CRCSDP-NO-24
N.O. (1 form A)
Contact rating 10 A @ 125 VAC, UL C300 rated
Note:
• The maximum surrounding ambient air temperature is 140°F (60°C)
• For use in a Pollution Degree 2 environment
The performance specifications are nominal and conform to acceptable industry standard. For application at conditions
beyond these specifications, consult the local Johnson Controls office. Johnson Controls shall not be liable for damages
resulting from misapplication or misuse of its products.
Product warranty
This product is covered by a limited warranty, details of which can be found at www.johnsoncontrols.com/
buildingswarranty.
CSDECM-ADJ Series ECM Adjustable Current Switch Installation Guide4

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set forth at www.johnsoncontrols.com/techterms. Your use of this product constitutes an agreement to such terms.
Patents
Patents: https://jcipat.com
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CSDECM-ADJ Series ECM Adjustable Current Switch Installation Guide 5

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are subject to change without notice.
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