l
STATUS – Pin 5 & 6 – Output; closed circuit: compressor in normal operation; open circuit:
compressor in alarm condition.
l
SPEED – Pin 7 & 8 – compressor motor speed output (0-5V = 10,000 RPM/volt)
NOTE
SPEED output no longer available for compressors running BMCC firmware versions CC 3.0 and later.
l
LIQT – Pin 9 & 10 – Liquid temperature sensor input
l
Refer to the Applications and Installation Manual for thermistor specifications
J3 – Input/output
l
RUN – Pin 1 & 2 – compressor running indicator output. Normally Open, closes when RPM reaches
specified RPM set in BMCC
l
ANALOG – Pin 3 & 4 – Output dependent on BMCC setting. 0-5V or 0-10V set by jumper JP1
l
ENTRY – Pin 5 & 6 – Entering chilled fluid temperature sensor input
o
Use ENTRY jumper when no sensor connected
o
Refer to the Applications and Installation Manual for thermistor specifications
l
LEAVE – Pin 7 & 8 – Leaving chilled fluid temperature sensor input
o
Use LEAVE jumper when no sensor connected
o
Refer to the Applications and Installation Manual for thermistor specifications
J4 – EXV 1 & EXV 2 Control – 15V output (200mA maximum each)
l
EXV1 – Pin 6 to 9
l
EXV2 – Pin 1 to 4
J5 – Liquid Level input
l
LIQ LEV 1 – Pin 4 to 6 – Liquid level sensor
l
LIQ LEV 2 – Pin 1 to 3 – Liquid level sensor
l
Provides Liquid Level feedback to drive EXV 1&2 in CC 3.1.4 only.
l
Refer to the Applications and Installation Manual for further information
l
Jumpers JP5 (LIQ LEV 1) & JP6 (LIQ LEV 2)
o
For use with a voltage-type level sensor (with 15V supply and 0-5V signal)
n
Install jumpers between LVL pins 2a and 3a, and pins 2b and 3b
n
Connect the sensor leads to the “+,” “S,“ and “-“ terminals on the Compressor I/O Board
(consult vendor documentation for sensor lead identification)
o
For use with a resistive-type float sensor
n
Install jumpers between LVL pins 1a and 2a, and pins 1b and 2b
n
Connect the sensor leads to the “-” and “S” terminals on the Compressor I/O Board
o
When using Superheat Control (no sensor connected)
n
Install jumpers between LVL pins 2a and 3a, and pins 2b and 3b
J6 – RS-232 Compressor Interface Cable connection
l
Communication port with Backplane
J7 – RS-232 external communication port
l
9-pin Serial Port
M-SV-001-EN Rev. H-1/23/2023 Page 61 of 294
Summary of Contents for Turbocor TT Series
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