64
Manual No. NT-0-350 - Rev. May 2021
NOVA Truck Lock
™
Standard Profile Manual
This fault can occur if
Resolution
The Ram bar is unable to unlock because RIG is
pinching Ram bar from lowering.
Back up trailer slightly to relieve pressure from Ram bar.
LS1 malfunctioned when the Ram bar is unlocked.
Ensure LS1 is secured and working properly. Inputs can
be verified on Page 65.
LS2 malfunctioned when the Ram bar is unlocked.
Ensure LS2 is secured and working properly. Inputs can
be verified on Page 65.
LS1 and LS2 are reversed.
Verify LS1 and LS2 are positioned as shown in Figure DC
or DD on Page 60.
If the slide pole or rod end assembly is positioned correctly (See Figure DC or DD, on Page 60) against the
corresponding limit switch but cannot read the position of the Ram bar, replace limit switch.
(Part Number: 06-0-013)
Display Information
—
No RIG Present (RIG Sensor is Optional)
This display shows the number of times, Limit Switch 3 (LS3) or RIG sensor has been off while the Ram bar
is locked. LS3 is found attached to Ram Housing. See Figure DR on Page 80.
This fault can occur if
Resolution
RIG sensor wand is bent and cannot locate the RIG
properly.
If applicable, bend RIG sensor wand back to proper
orientation or order a replacement wand.
(Part Number: 06-0-065).
The RIG sensor is not depressed when the Ram bar
is locked.
Realign trailer so RIG depresses RIG sensor. If RIG
sensor cannot be depressed when the Ram bar is
locked, enter HORN OVER-RIDE mode by following the
instructions printed on the control box.
LS3 malfunctioned when the Ram bar is locked.
Ensure LS3 is secured and working properly. Inputs can
be verified on Page 65.
If the RIG sensor wand is position correctly against a RIG and is activating LS3, and the LS3 is wire correctly but
cannot read the position of the RIG, replace sensor switch assembly.
(Part Number: LS3: 06-3-925)
Display Information
—
Door not closed/Ramp not stored (This fault is only for the Interlock Door A OR Interlock
Leveler)
This display shows the number of times the door or ramp comes off of Limit Switch 4 (LS4) when the Ram
bar is not locked and the control box is not in HORN OVER-RIDE.
This fault can occur if
Resolution
LS4 malfunctioned.
Ensure LS4 is secured and working properly. Inputs can
be verified on Page 65.
Door or leveler moved off of LS4 by external means.
Enter maintenance mode to activate interlock equipment
and move interlocked equipment back onto LS4.
Display Information
—
LS1 Off LS2 On
This display shows the number of times LS1 has been off and LS2 has been on when the Ram bar is down.
LS1 and LS2 are found inside the console. See Figure DC or DD, on Page 60.
TROUBLESHOOTING
Display Information
—
HORN OVER-RIDE Count
This display shows the number of times the HORN OVER-RIDE function has been activated. The HORN
OVER-RIDE function should only be used when the Ram bar cannot properly secure the RIG.
Key Point: The maintenance code can also be used to disable HORN OVER-RIDE in case the standard code for
HORN OVER-RIDE has been over-written.
Summary of Contents for Standard Profile Truck Lock Series
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