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AO Module (Analog Output)
Signal Type: Gas concentration analog signal
Output: DC4-20mA (common negative terminal with power source)
(Output accuracy: within FS ±0.5%)
*0.6mA or less when a fault alarm indication occurs
*The resistance, including wiring resistance, must be 300Ω or less
External Connection Terminal Compatibility/Cable: Terminal block (12pin ×1, 1pin ×1)
Compatible cables: CVV-S 1.25mm² and others
DO Module (Contact Output)
Signal Type: Gas alarm contact (1-stage and 2-stage), fault alarm indication contact
Output: 1a non-voltage contact/automatic return
*Rated load 125VAC 0.5A or 30VDC 1.0A (resistive load)
External Connection Terminal Compatibility/Cable:
Terminal block (12pin ×1)
Compatible cables: CVV-S 1.25mm² and others
MR Module (Modbus-RTU)
Signal Type: Modbus-RTU
Output:
Maximum number of connections: 32 (including master)
Communication method: RS485
2-wire half duplex
Maximum transmission distance: 1.2km (to host device)
Speed: 4800bps, 9600bps, 19200bps, 38400bps
External Connection Terminal Compatibility/Cable: Terminal block (3pin ×1, 1pin ×2); Compatible cables: CVV-S 1.25mm² and others twisted pair shielded cable
AI Module (Analog Input)
Signal Type: —
Input Number: 2
Input: 4-20mA analog input / 0-21.6mA
External Connection Terminal Compatibility/Cable: Terminal block (3pin ×2, 1pin ×1); Compatible cables: CVV-S 1.25mm² and others
Operating Temperature and Humidity Range: 0°C to 40°C (with no sudden changes), 30 to 85%RH (with no condensation)
Power Source Used: Supplied from the main unit
Dimensions: W60 × H124 × D172mm (excluding protrusions)
Weight: Approx. 410g
*1 Modbus-RTU can be used with Ethernet or dispersion unit.
*2 The Main Unit analog output is limited to the Main Unit. The Sub Unit sensor analog output requires the AO expansion module. The AO expansion module can output analog signals from the Main Unit allowing for multiple connections.
*3 When installing two or more sensors using a Sub Unit and using individual contact output, use a DO expansion module. In this case, the individual outputs for the sensors installed in the Main Unit will be output from the expansion unit (the main unit's contacts will be output all at once).
