Mitsubishi Electric MR-D30 Instruction Manual page 91

4. SAFETY OBSERVATION FUNCTION
(4) Input signal conditions at start-up/error detection
(a) At start-up
The each output device remains off until the diagnosis completes after the MR-D30 is turned on.
After the diagnosis is completed, devices assigned with [Pr. PSD08 Output device selection DO1] to
[Pr. PSD11 Output device selection DO4] will be activated.
The diagnosis completion time differs depending on the safety observation function control by input
device or by network. For the safety observation function control by input device, refer to section
4.4.1 (4). For the safety observation function control by network, refer to section 4.4.3.
Power
supply
STOS (STO output)
DO1A
DO1B
DO2A
DO2B
DO3A
DO3B
DO4NA
DO4PB
(b) At error detection
If MR-D30 detects an error and an alarm which disables SSM occurs, the each device turns off.
Refer to chapter 7 for corresponding alarm Nos. If a non-corresponding alarm occurs, assigned
devices will be outputted continuously.
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
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Diagnosing