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NSC Sicherheitstechnik B02842-00 XP95 Three Channel Input/Output Unit
Unfortunately, we no longer supply products by NSC. Please visit the Fire Extinguishing section for alternative options.
The XP95 Three Channel Input/Output Unit designed by NSC Sicherheitstechnik is available
in the following options:
in a plastic enclosure
in a plastic enclosure and with built in
bi-directional short-circuit isolator
as a printed circuit board (PCB)
as a PCB and with built-in bi-directional shortcircuit
The XP95 Three Channel Input/Output Unit provides
three volt age-free, single pole, change-over relay
outputs and three monitored switch inputs.
The XP95 Three Channel Input/Output Unit supervises
one or more normally-open switches on each of the
three inputs. It is set to return an analogue value of
4 in the event of an open or short-circuit fault and 16
during normal operation. The status of the inputs is
reported by means of three input bits.
The change-over contacts of each relay are operated
by three command bits.
If the model is ordered with a short-circuit isolator the
Input/Output Unit will be unaffected by loop
short-circuits on either loop input or output.
The XP95 Three Channel Input/Output Unit is loop
powered and operates at 17–28V DC with protocol
voltage pulses of 5–9V.
The unit will operate only with control equipment
using Apollo XP95 or Discovery protocol. It may also be
used to replace earlier Series 90 Three Channel Input/
The Input/Output Unit is supplied in an enclosure for
surface mounting or as a PCB.
The enclosure is moulded from self-extinguishing,
glass-fi lled ABS. Ten 16mm/21mm and six
22mm/38mm dual diameter cable entry knockouts
Ten LEDs, six red and four yellow, are fi tted to the PCB.
All LEDs except the isolator LED can be disabled to
conserve loop current.
For each channel, one red LED is illuminated to indicate
that the relay is set; a second red LED is illuminated to
indicate that the switch input is closed and a yellow
LED is illuminated to indicate an open or short-circuit
A separate yellow LED is illuminated whenever the
built-in isolator has sensed a short-circuit loop fault.
Apollo Part Numbers
Three Channel Input/Output Unit 55000-589
Three Channel Input/Output Unit with Isolator 55000-588
Three Channel Input/Output Unit PCB only 43781-589
Three Channel Input/Output Unit with Isolator PCB only 43781-588
Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.
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