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Honeywell ML6984 User Manual

Series 4000 direct coupled valve actuators
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Direct Coupled Valve Actuators
APPLICATION
The ML6984 and ML7984 are self-contained, self-
adjusting, motorized valve actuators that mount directly
onto V5011 two-way and V5013 three-way globe valves,
providing linear stem operation between 1/2 in. (13 mm)
and 1 in. (25 mm).
FEATURES
• Self-contained, motorized globe valve linkage.
• Microprocessor-based digital position sensing and
motor control for accurate positioning.
• Compact size for easy installation in confined spaces.
• NEMA 3R rain-proof cover for outdoor installation.
• Self-calibrating for valve stroke from 1/2 in. (13 mm)
to 1 in. (25 mm).
• DIP switch input configuration selection.
• LED (light-emitting diode) status indication.
• Configurable to 3-wire mode for floating models.
• 710 N 160 lbf (712 N) valve closing force.
• Usable with common transformer power supply for
multiple actuators and controllers.
• 24 Vac or 28 Vdc power supply.
• Field-addable position feedback/auxiliary switch
module available for 5-wire models.
ML6984 is for use with low voltage SPDT Series 20, Series
60 (on-off), or SP3T Series 60 (floating) electro-
mechanical and electronic controllers.
ML7984 is for use with Series 70 0-10 Vdc, 2-10 Vdc, 4-20
mA; electronic Series 90 "SuperMod"; and 135 ohm
modulating controllers.
Specifications ...............................................................................
Ordering Information ................................................................
Installation ....................................................................................
Wiring Schematics .....................................................................
Operation .......................................................................................
Replacement Notes .................................................................... 10
Checkout ........................................................................................ 11
Troubleshooting .......................................................................... 12
PRODUCT DATA
Contents
2
2
3
5
9
95C-10939-11

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  Summary of Contents for Honeywell ML6984

  • Page 1: Table Of Contents

    5-wire models. APPLICATION The ML6984 and ML7984 are self-contained, self- ML6984 is for use with low voltage SPDT Series 20, Series adjusting, motorized valve actuators that mount directly 60 (on-off), or SP3T Series 60 (floating) electro- onto V5011 two-way and V5013 three-way globe valves, mechanical and electronic controllers.
  • Page 2: Specifications

    TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Environmental and Combustion Controls Sales Office (check white pages of your phone directory).
  • Page 3: Installation

    ML6984, ML7984 SERIES 4000 DIRECT COUPLED VALVE ACTUATORS 4.02 1/4 - 20 NUT (102) 2.01 1/4 - 28UNF 1.368 (34.7) (51) 7/8 (22) MOUNTING DIA. Knockout 7.04 (178.8) (102) 1.53 (39) 4.57 (81) (116) 3.07 (78) 0.80 3.09 (20.5) 4.06 (77.5)
  • Page 4 ML6984, ML7984 SERIES 4000 DIRECT COUPLED VALVE ACTUATORS Weather-proof conduit fittings approved for out- NOTE: Use the U-bolt supplied with the actuator. Do not door and wet locations must be used to maintain replace with stainless steel U-bolt on chilled water NEMA 3R rating.
  • Page 5: Wiring Schematics

    Fig. 10. 5-Wire Control of ML6984. CONTROLLER CAN BE LOW VOLTAGE SPDT SERIES 20 “ON-OFF” OR SP3T SERIES 60 “FLOATING” (TRI-STATE) TYPE. TERMINALS R AND T5 ARE CONNECTED INSIDE THE ML6984. M25492A Fig. 8. 3-Wire Control of ML6984 with Series 60 Controller. 95C-10939—11...
  • Page 6 ML6984, ML7984 SERIES 4000 DIRECT COUPLED VALVE ACTUATORS SIGNAL ML7984 SOURCE ML7984 SIGNAL SOURCE ML7984 ML7984 24 VAC 24 VAC 28 VDC 28 VDC ML7984 ML7984 (SLAVE) FUNCTION DIP SWITCH CONFIGURATION FUNCTION DIP SWITCH CONFIGURATION ON (1) 1000 ON (1)
  • Page 7 ML6984, ML7984 SERIES 4000 DIRECT COUPLED VALVE ACTUATORS MODULATING ML7984 SINGLE LIMIT ML7984 SOURCE 24 VAC SINGLE ML7984 28 VDC SOURCE ML7984 24 VAC 24 VAC ML7984 ML7984 28 VDC 28 VDC 24 VAC 28 VDC FUNCTION DIP SWITCH CONFIGURATION...
  • Page 8 ML6984, ML7984 SERIES 4000 DIRECT COUPLED VALVE ACTUATORS ML7984 ELECTRONIC ML7984 SERIES 90 ELECTRONIC (W973, T775, SERIES 90 H775, W7100) (W973, T775, H775, W7100) 24 VAC ML7984 NOTE: ML7984 POLARITY SENSITIVE, 28 VDC CHECK CONNECTIONS W to R, R to W...
  • Page 9: Operation

    T6 are powered, and flashes when the actuator is in motion. T5 is connected to Terminal R in ML6984 and to Terminal DO NOT electrically operate the MLx984 actuator W in ML7984.
  • Page 10: Replacement Notes

    M25501 TH6110D Fig. 17. ML6984 with Honeywell T87F Round™ Thermostat. If connecting the ML6984 directly to a T87F with a Series 20 sub-base, clip out the cooling anticipation resistor on ML6984 the sub-base between terminals R and Y. This is needed...
  • Page 11: Checkout

    5. Operate the system (valve, actuator, and controller) for several cycles to ensure proper installation. 1. The new ML6984 is a direct replacement for the old 6. When checkout is complete, return the controller to ML684A in single actuator or parallel multiple actua- the desired setting.
  • Page 12: Troubleshooting

    ML6984, ML7984 SERIES 4000 DIRECT COUPLED VALVE ACTUATORS TROUBLESHOOTING Symptom Possible Causes Actions Valve seat leaks or will not close Wrong actuator used and/or system head pressure too 1) Check valve close-off rating properly high 2) Check voltage at actuator terminals...

This manual is also suitable for:

Ml7984