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Honeywell 4000 Series, Данные о продукции

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SYMPTOM

POSSIBLE CAUSES

ACTIONS

Motor
overheats/smoke/component
burn-out

Current sensing circuit failed or electronic
components failed

Replace actuator. Make sure:
1) Correct actuator used
2) Properly installed
3) Do not operate actuator before
mounting on valve supply
4) Proper voltage supply
5) Use high temperature kit
(43196000-001)

ML will not respond

LED (on):

LED (off):

Incorrect DIP switch settings

Check against Product Instruction
Sheet

No control signal present

Check controller

Incorrect wiring connections

Internal time delay

Check against Product Instruction
Sheet

Allow at least 1/2 - 1 second for the
ML to respond

Vdc/mA signal drops when
connected to ML

Actuator yoke corrodes

Floating Actuator position
"drifts" when used with
building automation system

Error mode (gearbox damage)

No or low power supply

1) Check power supply
2) Check callibration cycle
3) Valve stroke length less than 1/2"
or greater than 1 1/4"
4) Reset device by a momentary
disconnect of power at T5 and T6.

Check voltage on T5 & T6
terminals

Change DIP switch setting

ML7984 in mA mode with voltage input

Signal degradation due to incompatible load
impedance

Output and ML Input Impedance
specifications

Galvanic reaction from dissimilar metals if
SS U-bolt used with aluminum yoke

Replace U-bolt with galvanized U-
bolt and nuts

Mismatch between actuator resolution (30
steps) and BAS controller

1) Read actual valve position using 
272630D feedback module 
2) Rewire actuator for 3-wire
control
3) Program daily valve reset

06/06 RJ
© Honeywell 2006 Printed in Canada
95C-10939-4

Automation and Control Solutions

Honeywell International Inc.

Honeywell Limited-Honeywell Limitee

1985 Douglas Drive North

35 Dynamic Drive

Golden Valley, MN 55422

Toronto, Ontario, M1V 4Z9

www.honeywell.com/building/components

Содержание 4000 Series

Страница 1: ...ple actuators and controllers 24 Vac or 28 Vdc power supply Field addable position feedback auxiliary switch module avail able 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 13 mm 1 2 and 25 mm 1 ML6984 is for use with low voltage SPDT Serie...

Страница 2: ... Stem Coupling 1 4 28 UNF thread Stroke Timing Nominal 63 seconds for 3 4 stroke Proportional to stroke length at 24 Vac Closing Force 710 N 160 lbs minimum at 24 Vac Force varies 22 N V 5 lbf volt Performance Specifications Life Expectancy at rated load and power conditions 50 000 full stroke cycles plus 1 000 000 repositions of 10 stem travel or 10 years whichever occurs first Hysteresis 5 Short...

Страница 3: ...r rubber O ring over the valve stem Fig 3 Indicator will self align to the marking on the yoke after complete operating cycle FIG 2 MINIMUM MOUNTING CLEARANCE When Installing This Product 1 Read these instructions carefully Failures to follow them could damage the product or cause a hazardous condition 2 Check ratings given in instructions and on the product to ensure the product is suitable for y...

Страница 4: ...astic cover from the MLx984 by loosening the two captive screws located on the top Drop the Allen Hex type of set screw included in the plastic bag into the top of the shaft hex side up 6 Tighten the set screw to lock valve stem in place Fig 6 using a 1 8 Allen wrench included FIG 4 U BOLT ASSEMBLY NOTE Use U bolt supplied with actuator Do not replace with stainless steel U bolt on chilled water v...

Страница 5: ...4 WITH XL10 ELECTRONIC CONTROLLER For Figures 8A 8B and 8C the following apply 1 2 3 4 5 Power supply provides overload protection and disconnect means Allow up to 0 5 amps for each device Actuators and controller can share same transformer provided that the VA rating of the transformer is not exceeded and proper phasing is observed Do not mix a c and d c power sources Controller can be low voltag...

Страница 6: ... c power sources In ML7984 T5 and W terminals are connected internally Device is compatible with 3 conductor wiring Use configuration DIP switches to select device functions Direct acting function actuator stem moves downwards with signal increases to 10V 20mA or Reverse acting function actuator stem moves upwards with signal increases to 10V 20mA Always turn power off before setting the DIP switc...

Страница 7: ...n DIP switches to select device functions Direct acting function actuator stem moves upwards with signal increase or Reverse acting function actuator stem moves downwards with signal increase Turn power off before setting the DIP switches For common transformer and common controller application please consult the factory For Figure 10A Only Maximum resistance per control circuit of 280 For Figure ...

Страница 8: ...function actuator stem moves upwards with signal increases to 10V 20mA or Reverse acting function actuator stem moves downwards with signal increases to 10V 20mA Turn power off before setting the DIP switches 1 2 3 4 5 8 95C 10939 4 4 5 T6 T5 B R W 3 2 ML7984 T6 T5 B R W 1 L1 L2 OR 28 Vdc 24 Vac T5 T6 3 2 ML7984 3 2 ML7984 T6 T5 B R W R W R W R W ELECTRONIC SERIES 90 W973 T775 H775 W7100 NOTE Pola...

Страница 9: ... the installer may occur 5 DO NOT connect 24 Vac between any ML7984 signal input terminals DEVICE FAILURE WILL RESULT NOTE Caution GENERAL NOTE 1 The ML7984 must be field configured with the DIP switches which are located beside the terminal block See wiring diagrams for details Turn power off before setting the DIP switches 2 There is a 1 5 second delay in actuator response to every signal change...

Страница 10: ...e needed Use Resistor Kit Part 272822 and set DIP switches accordingly See Figures 12 13 TO REPLACE ML684 1 The new ML6984 is a direct replacement for the old ML684A in single actuator or parallel multiple actuators hook up The old and new actuators can be mixed in the same electrical circuit For multiple actuators controlled by a common controller in parallel these actuators must be wired so that...

Страница 11: ...ke sure the valve stem is locked in place with the set screw 3 Connect 24 Vac or 28 Vdc power to T5 and T6 4 Jumper R B The valve stem should move up 5 Jumper R W The valve stem should move down 6 For Floating operation open R connection Valve stem should remain in position 7 Re connect all control wiring 8 Operate the system valve actuator and controller for several cycles to ensure proper instal...

Страница 12: ...ge No or low power supply 1 Check power supply 2 Check callibration cycle 3 Valve stroke length less than 1 2 or greater than 1 1 4 4 Reset device by a momentary disconnect of power at T5 and T6 Check voltage on T5 T6 terminals Change DIP switch setting ML7984 in mA mode with voltage input Signal degradation due to incompatible load impedance Output and ML Input Impedance specifications Galvanic r...

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