IMPULSE
®
•G+ & VG+ Series 4 Technical Manual
November 2020
Page 114
5.2.24 Maintenance Timer
The “Maintenance Timer” is a maintenance feature that will alert an operator, for example, when the bearings need
to be greased. It consists of a Multi-Function Output (H02-0x–08 = 37) that becomes active when the total running
time has exceeded the amount of time (in hours) programmed in parameter C12-05 and the frequency reference
will be multiplied by a programmable gain (C12-06) to slow the motion down until the bearings have been greased.
An alarm will also be posted on the Keypad stating “Maintenance Required”. Once the bearings have been
greased, the output and alarm message can be reset by two different methods. One method is through a Multi-
Function Input programmed for Maintenance Reset (H01-01–08 = 5A) and the second method is by pressing the
Mode/Service (Local/Remote) button three consecutive times with no more than 2 seconds between presses.
Press enter to reset the timer. A message will then appear on the keypad stating that the timer has been reset. The
Multi-Function Output will turn off at this time. When C12-01 = 0, the function is disabled.
Table 5-40: Maintenance Timer Parameter Settings
5.2.25 Load Share
See Section 5.2.6 on page 86 for more information on Load Share.
Table 5-41: Load Share Parameter Settings
Parameter Display Function Range Default
C12-05 Maintenance Tmr Maintenance Timer Trip Level 0–32767 Hr 0
C12-06 Maintenance Gain Speed Reference Gain 0.00–1.00 0.50
Parameter Display Function Range Default
C12-07 LdShare Flt Time The amount of time to wait for Follower VFD
to give a Ready Signal, when in Load Share,
before triggering a fault.
0.0–25.5 sec 1.5
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