256 43-TV-25-30 Iss.6 GLO Aug 07 UK
Analogue Input
User Defined Maximum Input Ranges
For values entered for the Range Type in the “Analogue In Menu” on page 54.
Relay Alarm/Digital Input Specification
Minitrend QX and eZtrend QXe recorders have one ‘slot’ for digital inputs and alarm re-
lay outputs. All alarm card channels provide 240V AC isolation channel to channel and
channel to recorder. Digital I/O channels will provide isolation to 100V AC test voltage (not
for mains connection).
The Multitrend SX recorder has three available expansion slots for Digital Input/Relay
Alarm output cards.
Inputs are automatically debounced to remove switching oscillations. All Digital Inputs are
volt free contacts, and are sampled at 10Hz max.
Relay/Alarm Output Card Options
There are two card options, split into two types:
4 Channel Relay Alarm Card
120/240 VAC 3 Amps rated (resistive load). The relay contacts are form C (NO, NC) and
includes suppression.
8 Channel Relay Alarm Card
120/240V AC 3 Amps rated (resistive load). Two channels on the 8 Relay Alarm card, can
be used as digital inputs. The relay contacts are form C (NO, NC) and includes suppression.
The 8 & 2 Relay Alarm card, this 8-channel card will have 8 mains rated relays, of which 2
of the 8 channels can be configured for use as digital inputs.
Table 12.1 : Analogue In Ranges
Preset Ranges
Maximum
Voltages
Preset Ranges
Maximum
Voltages
50V 52V 1000mV 1.1KV
25V 26V 500mV 600mV
12V 13V 250mV 300mV
6V 6.5V 100mV 150mV
3V 3.25V 50mV 75mV
1.5V 1.6V 25mV 36mV
0.6V 0.8V 10mV 18mV
0.3V 0.4V 5mV 9mV
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