Specifications

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Communication / B.M.S.
CTU4601 - Modbus RTU Protocol
Input / Output card for Modbus
communication net
The CTU-4601 is an Input / Output (I/O) card
for Modbus communication net, designed to
control various devices from B.M.S. software.
It has 8 inputs, dry contact to view the status
of any device or other input connected and
8 outputs to control any device, such as:
- Air compressor - Lights
- Chiller - Pump
- Fresh air damper - Outdoor Lights
The CTU-4601 also offers 3 Temperature sensor inputs in order to view temperature in different locations and 2
analog inputs.
Features
COMPATIBLE
B.M.S
COMM
y 8 Digital Outputs – Available in either
230VAC, 110VAC or 24VAC
y 8 Digital Inputs – voltage free – dry contact
y 2 Analog Inputs, 0-10VDC
y 3 Temperature reading Inputs (50KΩ @ 25ºC)
y Easy connection to Din Rail
y MAC Address selection by DIP Switches
Wiring diagram
Digital Input 1
Communication
Modbus protocol
Temp. sensor T1 Temp. sensor T2 Temp. sensor T3
Digital Input 2 Digital Input 3 Digital Input 4 Digital Input 5 Digital Input 6 Digital Input 7 Digital Input 8
Analog Input 1 Analog Input 2
0-10VDC