43-TV-33-56 iss.4 GLO Aug 19 UK
6
Procedure for Alarm Relay and Digital I/O Cards
There are two main types of alarm cards, the Alarm Relay card and the Digital I/O card.
The Alarm/Relay card is available with 4 or 8 channels of relay output, the 8 channel having two channels of digital input
as standard (channel 7 & 8).
The Digital I/O cards are available with 8 or 16 channels; all channels may be used as digital inputs or relay outputs.
(Only the 8 channel version is available on eZtrend)
All alarm cards take up slot position in slot G in the Minitrend and eZtrend recorders and slot positions G, H and I in the
Multitrend recorder.
Connections
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8
NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO
Channels 7 & 8 Input across NO, C
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11CH12 CH13 CH14 CH15 CH16
NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C
NC = Normally Closed, C = Common, NO = Normally Open
