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Digital Input / Output Relay Interface
2
Introduction
Applications / functions / specifications
Applications
• The Digital Input / Output Relay Interface is used to control air conditioners by interlocking them with electric lock
signals, and to transmit air conditioner failures to other devices.
Functions
• The Digital Input / Output Relay Interface connects non-voltage contact signals, transmits their input status to
the Smart BMS Manager, and outputs signals from the contacts (open collector) according to the command from
the Smart BMS Manager.
Specifications
Power supply
Power consumption
Operating temperature / humidity
Storage temperature
Chassis material
Dimensions
Mass
Digital input
Digital output
External power supply for Digital Output
External view
3-EN
120 VAC, 60 Hz
5 W
32 to 104 °F (0 to 40 °C), 10 to 90% RH (no condensation)
-4 to 140 °F (-20 to +60 °C)
Galvanized sheet metal 0.8 t
2.59" (H) x 7.59" (W) x 9.68" (D) inch (66 (H) x 193 (W) x 246 (D) mm)
2.98 lb (1.35 kg)
Input type
Input points
Input registance
Input "ON" current
Output type
Output points
Output current
Output voltage
9.68" (246)
9.21" (234)
9.68" (246)
8.62" (219)
– 3 –
Installation Manual
Photo-coupler insulation
8 points
3 k ohm
3.6 mA
Open collector
4 points
Max. 35 mA (per point)
Less than DC 24 V
DC 12 V, 90 mA
Unit: inch (mm)
6-Ø7/32"
(6-Ø5.5)
mounting holes
2.59" (66)
2.5"
(63.6)
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