Governor Check; Speed Setting - Deif Multi-line 2 General Manuallines For Commissioning

Multi-line 2
Even if the engine manufacturer has adjusted the governor, it is necessary to carry out the
following adjustments to be sure that the multi-line 2 can successfully operate with the speed
governor.
The governor should be tuned in according to the governor/engine manufacturer's instructions. It
is important that the engine is able to run smoothly and without hunting before the control
function of the multi-line 2 is activated.
An initial speed setting must be made.
The speed setting procedure depends on the interfacing.
Relay output
• Disable the outputs from the multi-line 2.
• Run the generator with no load (open generator breaker).
• Adjust the frequency (on the speed governor) to be base frequency (50 or 60Hz).
Analogue output
The analogue output is a +/- 20mA signal which in most cases must be converted into a voltage
using a resistor across the terminals (150Ω gives 3V DC at 20mA, etc).
Given the fact that especially the governors are sensitive to the external circuit impedance, it is
essential to carry out the initial setting of speed governor while the multi-line 2 is connected and
the control function disabled.
Putting the multi-line 2 in manual operation disables the control function. This will 'disable' the
control outputs, but the generator protection is still active. If you fail to do this, you may
experience control problems later on.
AGC/BGC:
• Go to MAN mode.
• Reboot the unit or activate the input 'reset analogue controller outputs'.
• Run the generator with no load (open generator breaker).
• Set the frequency (on the speed governor) to be base frequency (50 or 60Hz).
GPU/GPC/PPU:
• Deactivate terminal 25.
• Reboot the unit or activate the input 'reset analogue controller outputs'.
• Run the generator with no load (open generator breaker).
• Set the frequency (on the speed governor) to be base frequency (50 or 60Hz).
With multi-line 2 PPU/GPC/AGC PWM output for Caterpillar
Since the PWM initial setting has an influence on the start-up speed of the engine, the first thing
to do is to set this (setting 2272 for multi-line, 2662 for AGC):
DEIF A/S

5. Governor check

Speed setting

General Guidelines for Commissioning
®
Page 10 of 19