IMPULSE•G+/VG+ Series 4 Technical Manual
November 2022
Page 86
5.2.10 Upper/Lower Limit Bypass
The Limit Bypass allows for the following without the use of jumpers or re-programming parameters:
1. Ease of testing the Weighted Upper Limit Switch (UL3) or re-homing the Hook Height.
2. To allow changing of the wire ropes, i.e. spooling all the rope off of the hoist drum.
NOTE:
A momentary key-switch is recommended to operate this function and should only be accessible to
maintenance personnel, not the crane operator. A functional description and usage procedure should be
included in an administrative control program to avoid confusion and potentially have the End of Travel
Limit switches left in a bypassed state during normal operation of the crane.
Table 5-26: Limit Bypass MFDI
×
= Limit Bypass
Functions Bypassed
C09-0x or H01-0x =
73
74
Upper Limit 1 N.O. (MFDI = 06)
×
Upper Limit 2 N.O. (MFDI = 07)
×
×
Lower Limit 1 N.O. (MFDI = 08)
×
Lower Limit 2 N.O. (MFDI = 09)
×
×
Upper Limit 1 N.C. (MFDI = 0A)
×
Upper Limit 2 N.C. (MFDI = 0B)
×
×
Lower Limit 1 N.C. (MFDI = 0C)
×
Lower Limit 2 N.C. (MFDI = 0D)
×
×
UL2 detected by EPLS (C03-16)
×
×
UL1 detected by EPLS (C03-17)
×
LL1 detected by EPLS (C03-18)
×
LL2 detected by EPLS (C03-19)
×
×