Connecting up
5.4 Digital input/output
SCALANCE M804PB
Operating Instructions, 07/2018, C79000-G8976-C496-01
43
5.4
Digital input/output
The digital input/output (relay contact) is a floating switch with which error/fault states can be
signaled by breaking the contact.
CAUTION
Damage due to voltage being too high or too low
The voltage at the digital input/output must not exceed 30 VDC and not fall below -30 VDC,
otherwise the digital input/output will be destroyed.
Note
Interference pulse
Zo avoid evaluating an interference pulse, the pulse for the signal 1 (TRUE / HIGH) must be
at least 200 ms.
Rules for user wiring
●
Always wire the digital input/output in pairs-
●
The maximum permitted cable length is 30 m.
Содержание SCALANCE M804PB
Страница 16: ...Safety notices SCALANCE M804PB 16 Operating Instructions 07 2018 C79000 G8976 C496 01 ...
Страница 36: ...Installation 4 6 Mounting on a pedestal SCALANCE M804PB 36 Operating Instructions 07 2018 C79000 G8976 C496 01 ...
Страница 54: ...Technical specifications SCALANCE M804PB 54 Operating Instructions 07 2018 C79000 G8976 C496 01 ...
Страница 56: ...Dimension drawing SCALANCE M804PB 56 Operating Instructions 07 2018 C79000 G8976 C496 01 Figure 7 2 Side view ...
Страница 66: ...Approvals A 3 General approvals SCALANCE M804PB 66 Operating Instructions 07 2018 C79000 G8976 C496 01 ...
Страница 68: ...Index SCALANCE M804PB 68 Operating Instructions 07 2018 C79000 G8976 C496 01 ...