Honeywell 272630D Installation Instructions

Position feedback and auxiliary switch accessory for ml6984 and ml7984

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APPLICATION

The 272630D auxiliary board is an optional

circuit board that is used in conjunction with

Series 4000 ML6984 and ML7984 globe valve

actuators. This auxiliary board combines the

function of an adjustable low voltage SPDT

auxiliary switch with a 2-10 Vdc or 4-20 mA

position feedback signal. It has a 4-pin keyed

connector for communications from the mother

circuit board.

SPECIFICATIONS

Feedback: 2-10 Vdc (10-2 V reverse acting)

into minimum impedance 500 Ω.

Maximum output current is

20 mA dc.

Auxiliary Switch: SPDT, 24 V, 50/60Hz, 1 A

2005.04 RJ Printed in Canada

Auxiliary Switch Accessory

inductive. Fixed differential

(3% of stroke), adjustable

operating point from 0 to

100% of stroke.

Position Feedback and

For ML6984 and ML7984

272630D

INSTALLATION INSTRUCTIONS

Form No. 95C-10941

Page 1: Specifications
Auxiliary Switch Accessory For ML6984 and ML7984 INSTALLATION INSTRUCTIONS APPLICATION The 272630D auxiliary board is an optional circuit board that is used in conjunction with Series 4000 ML6984 and ML7984 globe valve actuators. This auxiliary board combines the function of an adjustable low voltage SPDT auxiliary switch with a 2-10 Vdc or 4-20 mA position feedback signal.
Page 2 T5-T6 are powered, and flash when may occur. Mount the actuator to the valve the actuator is in motion. before connecting to power. NOTE: 272630D requires that the actuator be Assembly continuously powered, so ML6984 must be wired in "5-wire" configuration.
Page 3 The 272630D provides: 1. A 2-10 Vdc voltage proportional to the valve stem position. This output is capable of sourcing up to 20 mA dc drive current. 2. An isolated "Form C" relay contact closure that energizes when the valve is open more than the setting of the trimmer potentiometer ("trim pot").
Page 4 Automatic and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitee 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN Scarborough, Ontario 55422 M1V 4Z9...