Mitsubishi Electric MR-D30 Instruction Manual page 86

4. SAFETY OBSERVATION FUNCTION
(c) Cautions for executing test pulse diagnosis by multiple devices.
When there are multiple input devices for the test pulse diagnosis, share PLSA/PLSB with those
input devices. A short-circuit failure between wirings sharing PLSA/PLSB cannot be detected with
the test pulse diagnosis. Execute the input device fixing-diagnosis at start-up (refer to section 4.4.1
(4)) in addition.
(d) Parameter setting
Set the following parameters for DI1_ to DI6_ which input devices are assigned to with [Pr. PSD02
Input device selection DI1] to [Pr. PSD07 Input device selection DI6].
Select whether or not to execute the test pulse diagnosis with [Pr. PSD24 Input device - Test pulse
diagnosis execution selection 1] and [Pr. PSD25 Input device - Test pulse diagnosis execution
selection 2]. Set the off-time of test pulses outputted from PLSA and PLSB to [Pr. PSD26 Input
device - Test pulse off time].
The achievable safety level depends on the input devices you use and parameter settings of this
function. Refer to section 4.1 for details.
Switch
Parameter
PSD24 Input device - Test pulse diagnosis execution selection 1
PSD25 Input device - Test pulse diagnosis execution selection 2
PSD26 Input device - Test pulse off time
4 - 15
CN10A
DC24VA
PLSA
24 V DC
DICOMA
DI1A
DI2A
Shorted
CN10B
Switch
DC24VB
PLSB
24 V DC
DICOMB
DI1B
DI2B
Name
MR-D30