Discussion:
forward travel contactor

I have a Rc3020-30 forward -fork travel contactor slow to drop out when micro switch opens on motion control handle.Neutral
Micro switch closed 36 Volts micro switch opens coil on contactor does not drop out until 22 volts
Reverse works fine but has to wait for forward coil to drop before it pulls in,about 2 second delay ?
Have put in a good card in unit No change
Snubber?
  • Posted 20 Nov 2014 10:51
  • By pacfork
  • joined 2 Jun'07 - 55 messages
  • British Columbia, Canada
Showing items 21 - 31 of 31 results.
when pacfork says "it has new contactors" is that the entire contactor assembly or tips?
  • Posted 24 Nov 2014 21:57
  • By edward_t
  • joined 5 Mar'08 - 2,334 messages
  • South Carolina, United States
"it's not rocket surgery"
check the resistance on the directional contactor coils
the one with the highest resistance is probably causing the slight delay in the actuation.
it also could be a worn armature in the contactor causing the drag and delay.
in either case the contactor will need to be replaced.

and on another note, as long as i've worked on crown lifts they have been fairly consistent in the addition of a suppressor of some sort on the contactor coils, usually they are a small square black plastic block that mounts in between the terminals of the coil. When the wires are disconnected sometimes they can fall out of place and get lost... i would check all the contactors and see... if some have them and some don't then someone did not put them back in place if the contactor was replaced in the past. If none of them are there it might be possible crown has stopped using them. If you have access to a parts manual they should be shown in the breakdown if they are supposed to be present on the circuit/coil.
  • Posted 24 Nov 2014 01:29
  • By swoop223
  • joined 23 Mar'12 - 3,691 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
are both contactors doing this or only one ? if it is only one is it for the left or right hand contactor ? contactors always have the positive on them and are given the negative from the EV-100 card
  • Posted 24 Nov 2014 01:03
  • By popeye
  • joined 24 Nov'14 - 208 messages
  • Ohio, United States
if it were me, my first move would be to check -all- the power cables for ANY (less than 100K ohms) short to frame, and eyeball all the cables to be sure none are soaked in corrosion, replacing any that are soaked, or have ANY damage to the insulation. next I would test to see if I could tell if the power was bleeding through the directional switch because of moisture or corrosion inside the switches (does removing the power [common] wire from the switch allow the current flow to stop as it should, does removing the normally open wire from the switch end current flow as it should? do the same on the reverse switch as it may have a circuit that runs through the rev switch normally closed side that should open up when the reverse switch closes, for opening the power to the forward circuit.
  • Posted 23 Nov 2014 00:49
  • By edward_t
  • joined 5 Mar'08 - 2,334 messages
  • South Carolina, United States
"it's not rocket surgery"
May be ?
I have changed lots of this style contactor never seen a suppressor on any of them
Pt # on the contactor is Cr116794.001 TVH
I swapped out 22 Rec,25 Rec ,23 Filter.24 Rec No Joy
Thanks
  • Posted 21 Nov 2014 11:31
  • By pacfork
  • joined 2 Jun'07 - 55 messages
  • British Columbia, Canada
It could be that the power flowing through the buss bars of forward contactor may be inducing voltage/magnetism in the contactor coil, holding it on for a bit even though the controller has stopped the voltage. Those Albright contactors usually have a filter or suppressor on them. It would look a little capacitor right across the terminals on the coil. If not, you could try a Crown part 077728 suppressor.
  • Posted 21 Nov 2014 08:32
  • By mrfixit
  • joined 11 Dec'08 - 1,434 messages
  • New York, United States
No M/S not sticking
It is Voltage is taking it"s time to drop down when M/S is opened
  • Posted 21 Nov 2014 03:25
  • By pacfork
  • joined 2 Jun'07 - 55 messages
  • British Columbia, Canada
100 LX
It has new contactors in, it but has same problem using old ones ?
S#!A200531
  • Posted 21 Nov 2014 03:24
  • By pacfork
  • joined 2 Jun'07 - 55 messages
  • British Columbia, Canada
Is the control handle micro switch sticking?????
  • Posted 21 Nov 2014 03:12
  • Modified 21 Nov 2014 03:13 by poster
  • By kevin_t
  • joined 2 Dec'10 - 1,301 messages
  • Pennsylvania, United States
100 LX
It has new contactors in it but has same problem using old ones ?
  • Posted 21 Nov 2014 03:05
  • By pacfork
  • joined 2 Jun'07 - 55 messages
  • British Columbia, Canada
what controller is in this unit? serial number?
  • Posted 20 Nov 2014 13:10
  • By edward_t
  • joined 5 Mar'08 - 2,334 messages
  • South Carolina, United States
"it's not rocket surgery"

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Upcoming industry events …
July 9-10, 2025 - Birmingham, United Kingdom
October 21-23, 2025 - Panama City, Panama
Latest job alerts …
Evansville, IN, United States
Daleville, IN, United States
St. Louis, MO, United States
Uxbridge, Canada
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025
Upcoming industry events …
July 9-10, 2025 - Birmingham, United Kingdom
October 21-23, 2025 - Panama City, Panama
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025
Upcoming industry events …
July 9-10, 2025 - Birmingham, United Kingdom
October 21-23, 2025 - Panama City, Panama
Latest job alerts …
Uxbridge, Canada
Daleville, IN, United States
St. Louis, MO, United States
Evansville, IN, United States
Fact of the week
Sourdough bread contains Lactobacillus reuteri, a probiotic bacteria. During pregnancy and breastfeeding, these bacteria can travel from the mother's colon to her breast tissue and be passed to the infant through breast milk. It offers various health benefits, including potential protection against breast cancer.