Item
Specifications
Connector type
M4 terminal block
Protocol
Modicon Modbus compliant/Simple communication protocol
Standards
EIA standard RS-485
Circuit diagram
*
The terminal resistance of RS-485 (120
W
) can be switched by the operation display panel. For details, refer to the Operation Manual for communication.
Do not connect other than in the way shown above, as it can result in failure.
Contact Input/Output
Item
Specifications
Connector type
M4 terminal block
Input signal
Insulation method
Photo coupler
Rated input voltage
24 VDC
Operating voltage range
21.6 to 26.4 VDC
Rated input current
5 mA TYP
Input impedance
4.7 k
W
Contact output
signal
Rated load voltage
48 VAC or less/30 VDC or less
Max. load current
500 mA AC/DC (Resistance load)
Min. load current
5 VDC 10 mA
Output voltage
24 VDC
±
10% 200 mA MAX (No inductive load)
Circuit diagram
*
1 The pin numbers and output signals can be set by the customer. For details, refer to the Operation Manual for communication.
*
2 When using with optional accessories, depending on the accessory, the allowable current of 24 VDC devices will be reduced. Refer to the Operation
Manual of the optional accessories for details.
Serial Communication
The serial communication (RS-485) enables the following items to be written and read out.
For details, refer to the Operation Manual for communication.
Please download the Operation Manual via our website: https://www.smcworld.com
4.7 k
Ω
1 k
Ω
Internal circuit
1
Contact input signal COM
Contact input signal 1: Run/Stop
(Default setting)
Contact input signal 2: External switch
(Default setting)
Contact output signal 1: Operation status
(Default setting)
Contact output signal 1 COM
Contact output signal 2: Alarm signal
(Default setting)
Contact output signal 2 COM
Contact output signal 3: TEMP READY signal
(Default setting)
Contact output signal 3 COM
24 VDC output
24 COM output
Product side
Customer system side
1 k
Ω
4.7 k
Ω
24 COM
24 COM
24 VDC
2
3
5
6
7
9
10
11
12
13
14
15
16
SD+
SD−
SG
RS-485
communication
1
9
Product side Customer system side
5: SD+
6: SD−
7: SG
5
Internal circuit
Writing
Run/Stop
Circulating fluid temperature
setting (SV)
Readout
Circulating fluid present temperature
Circulating fluid discharge pressure
Status information
Alarm occurrence information
Communication Functions
18
Thermo-chiller
Compact Dual/Basic Type for Lasers
HRLE
Series