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Part Number or the Week S3EP-V-VAD-HPR-R

Morley-IAS ZXe Loop driver card for Morley protocol

Part no.795-072
BrandMorley-IAS
RangeMorley ZXSe Panels
Sub-rangeLoop Card

Image for illustration; item supplied may differ

At a glance

  • Morley-IAS Loop Driver Card795-072 is the Morley-IAS Loop Driver Card.
  • 440mA Per LoopMaximum continuous loop drive current is 440mA per loop.
  • 20mA Card ConsumptionPower consumption is 20mA (excluding loop devices).
  • Loop Circuit LimitsThe loop is rated to a resistance of 40 Ohm max. and a capacitance of 0.5 µ F max.
  • Class A Or B WiringLoop wiring may be class A or class B with shielded, twisted wire.
  • Motherboard Screw TerminalsLoops land on screw terminals on the motherboard, taking a removable block for a maximum cable cross sectional area of 2.5 mm 2 (13 AWG).
  • Two Diagnostic LEDsA pair of diagnostic LEDs shows the driven end of the loop.
  • ZXa And ZXe Loop PowerA maximum of 500 mA is available for two loops in ZXa and 1250mA for five loops in ZXe.
DescriptionSpecifications

Description

Loop power available is 500 mA across two loops in ZXa and 1250mA across five loops in ZXe.

Against that, the Morley-IAS Loop Driver Card asks 20mA (excluding loop devices) for itself and offers 440mA per loop of drive. Field cable terminates in a removable block on motherboard screw terminals, sized up to 2.5 mm 2 (13 AWG), and may be run class A or class B with shielded, twisted wire.

Read the full technical description

795-072 is the Morley-IAS Loop Driver Card. The maximum continuous loop drive current it supplies is 440mA per loop, and the card's own power consumption is 20mA (excluding loop devices).

The loop circuit is limited to a resistance of 40 Ohm max. and a capacitance of 0.5 µ F max. Two diagnostic LEDs on the card show the driven end of the loop.

Loop wiring is class A or class B with shielded, twisted wire, landing on screw terminals on the motherboard that take a removable block for a maximum cable cross sectional area of 2.5 mm 2 (13 AWG).

A maximum of 500 mA is available for two loops in ZXa, and a maximum of 1250mA is available for five loops in ZXe.

Specifications

DescriptionMORLEY LOOP CARD
Order part number795-072
Commercial part number795-072
Unit of measureea
Lead time1W

Specifications per manufacturer documentation, subject to change. E&OE.