90 Motor control and I/O board (RMIO)
Relay outputs
Three programmable relay outputs
Switching capacity 8 A at 24 V DC or 250 V AC, 0.4 A at 120 V DC
Minimum continuous
current
5 mA rms at 24 V DC
Maximum continuous
current
2 A rms
Insulation test voltage 4 kV AC, 1 minute
DDCS fibre optic link
With optional communication adapter module RDCO. Protocol: DDCS
(ABB Distributed Drives Communication System)
24 V DC power input
Voltage 24 V DC ± 10%
Typical current
consumption (without
option modules)
250 mA
Maximum current
consumption
1200 mA (with option modules inserted)
The terminals on the RMIO board as well as on the option modules attachable to the board fulfil the
Protective Extra Low Voltage (PELV) requirements stated in EN 50178 provided that the external
circuits connected to the terminals also fulfil the requirements and the installation site is below 2000
m (6562 ft). Above 2000 m (6562 ft), see page 57
.
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