Hybrid Modules - ABB SM1000 User Manual

Videographic Recorder
SM1000

4.8.7 Hybrid Modules

94
Select a digital output source.
Note.
A digital output source is the internal digital source used to
activate/de-activate a digital output.
If a digital output is used to provide a totalizer count pulse,
the maximum pulse frequency is 5Hz.
Select the digital output source polarity.
Note. When the polarity is set to 'Positive', the digital output is
energized when the digital source is active (On).
The six digital inputs from any hybrid module produce six
independent digital states that can be used as digital sources for
recording channels, relay outputs, alarm acknowledgement etc.,
e.g.:
Digital I/P H1, Digital I/P H2
Additionally, digital inputs from a hybrid module in position H
(see Fig. 5.5) can be used to produce up to 32 Binary Encoded
(BCD) digital states, e.g.:
BCD digital I/P H0 to BCD digital I/P H31
BCD digital inputs can be used as digital sources in the same
way as standard digital inputs.
Inputs H1, H2, H3, H4 and H5 have 'weightings' of 1, 2, 4, 8,
and 16 respectively. A rising edge on input H6 is used as the
update trigger.
Following an inactive to active transition on input H6, inputs H1
to H5 are evaluated, the weighted values of any active inputs are
added together and the BCD digital input corresponding to the
total is activated. All other BCD digital inputs are deactivated.
Example.
If digital inputs H1 (weighting = 1), H2 (weighting = 2) and H4
(weighting = 8) are active when digital input H6 (update trigger)
is activated, BCD digital input H11 (1 + 2 + 8) is activated. BCD
digital inputs H0 to H10 and BCD digital inputs H12 to H31 are
deactivated.
If digital inputs H1 to H5 are all inactive when digital input H6
(update trigger) is activated then BCD digital input H0 is
activated. BCD digital inputs H1 to H31 are deactivated.
4 Configuration
IM/SM1000 Issue 11