CNC4PC C55 Dual 25A Relay Board User Manual
- June 9, 2024
- CNC4PC
Table of Contents
CNC4PC C55 Dual 25A Relay Board
USER’S MANUAL VER.1.3
C55 DUAL 25A RELAY BOARD Rev. 3.1
OVERVIEW
This board serves as a basic dual relay board with two 25Amp electromechanical
relays. Delay on activation or on deactivation signal can be configured.
Multiple boards can be daisy chained for activation several relays
simultaneously.
This version can be easily mounted on control boxes using DIN rails
FEATURES
- Two 25 Amp. Electromechanical relays with NO and NC positions.
- Two RJ45 connectors for Input and output signals. To allow daisy chain connecting to 4 boards.
- Screw-On connections for all terminals (input signal and relay contacts).
- Indicator LEDs for relay status.
- User-configurable delay on activation or on deactivation for each relay.
- Three Dipswitch-selectable delays (1, 2.5 and 5 seconds).
- Din Rail Mountable. NEW.
- Pluggable Screw-On Terminals. NEW.
BOARD DESCRIPTION
SPECIFICATIONS
Power Requirements.
It requires a 12VDC@200mA external power supply to operate.
Note : For cascade connection are required 400mA for each C55 to connect
WARNING
Check the polarity and voltage of the external power source and connect the
12VDC and GND. Overvoltage or reverse-polarity power applied to these
terminals can cause damage to the board, and/or the power source.
Relays Specifications
ELECTROMECHANICAL RELAYS SPECIFICACTIONS
Maximum AC Current
| 20A, 240VAC; (NC CONTAC)
30A, 120VAC; (NO CONTAC)
Maximum DC Current
| 20A, 28VDC; (NC CONTAC)
30A, 28VDC; (NO CONTAC)
RJ45 PINOUT:
Control signals and power can be connected through this RJ45 connector or
the terminals.
| RJ45 PIN | FUNCTION |
|---|---|
| 1 | GND |
| 2 | IN_4 |
| 3 | IN_3 |
| 4 | IN_2 |
| 5 | IN_1 |
| 6 | NOT_USED |
| 7 | NOT_USED |
| 8 | 12VDC |
WIRING SAMPLE
Note: This wiring is just to illustrate a sample product application. Specific wiring may vary from system to system. It is the user’s responsibility to implement it correctly.
Basic Wiring
Note: This wiring is just to shows a sample product application. Specific wiring may vary from system to system. It is the user’s responsibility to implement it correctly.
DELAY CAN APPLY TO ACTIVATION OR DEACTIVATION
The board has jumpers and dipswitches to select the delay type and the delay
time. 
Set the DIP
position to determine the delay. 
SELECTION JUMPER TO ACTIVATION RELAYS
Relay 1 and 2
To activate RELAY 1 and RELAY 2 with the signal IN1: To activate RELAY 1 and
RELAY 2 with the signal IN2: To activate RELAY 1 with the signal IN_2 and
activate RELAY 2 with the signal IN_1: To activate RELAY 1 and RELAY 2 with
the delay of the IN_2: To activate RELAY 2 with the signal IN_3 and activate
RELAY 1 with the delay of the IN_2: To activate RELAY 2 with the delay of the
IN_2 and RELAY 1 with the signal IN_4:
DIMENSIONS
All dimensions are in Millimeters.
Fixing holes (4mm)
DISCLAIMER
Use caution. CNC machines can be dangerous machines. Neither DUNCAN USA, LLC nor Arturo Duncan are liable for any accidents resulting from the improper use of these devices. This board is not a fail-safe device and it should not be used in life support systems or in other devices where its failure or possible erratic operation could cause property damage, bodily injury or loss of life.
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