CMSS 570(A) Series Temperature Transmitter/Monitor

CMSS 570(A) Series Temperature Transmitter/Monitor
SKF Machine Condition Transmitters (MCT)
CMSS 570(A) Series Temperature/Monitor
www.skf.com/reliability
9
CMSS 570(A) Series Temperature Transmitter/Monitor
Introduction
The CMSS 570(A) Series are solid state temperature transmitters/
monitors. They can be used with solid-state temperature sensor
or dual output vibration/temperature sensor that provides a 10
mV/K output. The input signal is processed to provide temperature
in degrees F or C. The output is a standard 4-20 mA current
proportional to this temperature, within the specified full-scale range
of 0-250 Degrees F. The 4-20 mA output is suitable for direct
connection to a Programmable Logic Controller (PLC) or Distributed
Control System (DCS).
Buffered Output
A BNC connector mounted on the front of the unit provides buffered
access to a 0-5 Vdc temperature proportional signal that can be read
with a standard voltmeter or data analyzer (Microlog).
Fault Detection
On board fault detection circuitry continuously monitors the transducer
for normal operation. If a fault occurs, the output current is reduced
to 2 mA to indicate the fault to the readout system. A red LED on the
front of the unit is turned on to provide a local indication of the fault.
Alarms
This monitoring option adds two independent set points, with LED
alarm indicators and output relay contacts (Alert and Danger). Set
points are adjustable via potentiometer, from 0 to 110% of full scale.
Each has an adjustable delay of 1 to 10 seconds. Relay contacts can
be independently configured by the user for either Normally Open (NO)
(Standard) or Normally Closed (NC) operation.
Relays are normally de-energized and can be configured for latching or
non-latching (standard) operation. Latched alarms may be reset locally
or by remote contact closure. SPST (Single Pole Double Throw) Relay
contacts are rated 5 Amps at 30 Vdc or 125 Vac for resistive loads.
The Alarm option also provides set point multiplication of 3x via contact
closure (2x available).
Displays and Assemblies
Various display options, NEMA and explosion-proof enclosures, and
assembled multi-channel systems are available. Consult your SKF
Reliability Systems Sales Representative.
Specifications
POWER REQUIREMENTS
Supply Voltage: +24 V DC (23 V
to 28 V). Reverse polarity and
transient protection included.
Supply Current:
CMSS 570 – 55 mA
CMSS 570A – 110 mA
Total Power: 3.1 W maximum
External Fuse: F250 mA/250 V
Relay Ratings:
Switching Voltage: 30 V DC
maximum or 125 V AC
Switching Current: 5 A maximum
INPUT
Sensor: CMSS 793T-3, CMSS
797T-1 Sensors
Sensor Sensitivity: 10 mV/K
OUTPUT
Buffered Acceleration Output:
BNC Connector, Screw terminal
Sensitivity: Depending on used
sensor input sensitivity, ± 10%
4-20 mA DC Output: 4-20 mA
proportional to the full-scale range
Accuracy: 0.5% of full-scale range
ENVIRONMENTAL
Operating Temperature: -4 °F to
+176 °F (-20 °C to +80 °C)
Storage Temperature: -67 °F to
+257 °F (-55 °C to +125 °C)
Relative Humidity: 0-95%
Relative Humidity Non-Condensing
MECHANICAL
Weight: 6.0 Ounces (170 Grams)
Enclosure: Thermoplast ABS
Color: Black, with gray front panel
Connectors: 12-pole screw
terminal, 2 BNC’s and two 6-pole
pluggable connectors.
Mounting: 32 mm (G style) or
35 mm (T style) DIN-Rail
Dimensions:
Length: 3.11 inches (79 mm)
Base: 1.80 inches (46 mm)
Height: 3.95 inches (100 mm)
The Machine Condition Transmitter
(MCT) CMSS 570(A) Series
Temperature Transmitter/Monitor
available as a Basic Model (pictured
at left) or as a stand-alone Monitor
(right).
Ordering
Information
• CMSS570A Temperature
Transmitter with Monitor,
Input CMSS 793T-3 or
CMSS 797T-1, Full scale
set to +250 °F
• CMSS570 Temperature
Transmitter, Input CMSS
793T-3 or CMSS 797T1, Full scale set to +250
°F
NOTES:
1. The full-scale option specified
at order entry is used by the
factory for initial calibration.
However, several other ranges
can be jumper selected in the
field.
Full-scale values: 0 to +250 °F.
Corresponding full-scale values:
-17.8 °C to +121.0 °C.
2. Transducer and full-scale
options not listed are available.
Contact your SKF Reliability
Systems Sales Representative.
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