GAC LSM200 Series Manual

1
INTRODUCTION
The LSM200 Series controllers provide Isochronous load sharing. These multifunction
load sharing and power control modules support GAC speed control units on generator
set applications requiring isochronous paralleling and for mains power control.
Engine generator sets with isochronous speed control units maintain the requested
speed very precisely. If synchronous generators are electrically paralleled to increase
the total generated power capability, a system to apportion the load is required.
Even the finest electric governors have minor frequency differences among units to be
paralleled, which would cause power variations. In this case, one generator set would
continuously increase the power it produces, while the other sets would decrease the
power they produce.
This condition eventually leads to motorizing one or more generator/ engines. The load
sharing system continuously adjusts the governor speed settings so that no average power difference exists The generators are
locked together through electrical synchronizing torques acting as a tightly connected gear drive. The line current measurements
are usually taken from current transformers in the equipment such as those used for ammeter circuits.
The LSM201 is available in a CE and non-CE version. Each supports:
• 24 V DC
• Isochronous Load Sharing
• Load Anticipation and Droop
• Forward and Reverse Power Monitoring and Reset Capability
• Power Monitor Adjustment Control
• Generator Power Ramping and Control
2
SPECIFICATIONS
PERFORMANCE
Load Sharing
Operating Modes
Reverse Power Monitor Trip Point
Reverse Power Delay
(Inverse Time Delay)
Forward Power Monitor Trip Point
Forward Power Delay
Power Output Signal
Forward and Reverse Power
Relay Contact Rating
Parallel Cable
Relay Contact Rating
ENviRONMENtAl
Operating Temperature
Humidity
All Surface Finishes
COMPliANCE / StANDARDS
Agency
LSM200 Series
Load Sharing Modules
Adjustable to within ± 2 % between sets
Isochronous and main power control
Adjustable from -2 to -20 %
Adjustable from 0.5 to 15 s
ON trip point adjustable from 20 - 100 %
OFF trip point adjustable from 0 - 80 %
Adjustable from 0.4 to 30 s
0 to -1 V DC reverse power
0 to +6 V DC forward power
Form C, 10 A 290 VA
Gold Clad, 1.25 A 60 VA MAX
-40 to 185 °F [-40 to +85 °C]
up to 95 %
Fungus proof and corrosion resistance
LSM201 - CE Approved
LSM201N - Non-CE approved
ROHs - Compliant
POWER iNPUt \ OUtPUt
3 phase
AC Voltage signals
3 phase AC Line Currents
DC Supply
Polarity
Power Consumption
Battery Supply
AC Phase Voltage Inputs
External Power Meter
(Voltage Output)
PHYSiCAl
Dimensions
Weight
Mounting
REliABilitY
Vibration
Testing
LSM200 Series Load Sharing Modules 6-2021-B1 PIB4100
1
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Two selectable ranges accommodate
100 - 500 V AC line-to-line
Isolated from battery (-) by 5000 V DC
Isolated from case by 1000 V DC
0-5 Amps with 1.25 VA requirement
Isolated from case by 1000 V DC
Connected to Speed Control Module
24 -32 V DC (Transient and Reverse
voltage protected). Battery (-) on all sets
must be connected together in common
Negative ground case isolated.
10 ma MAX Current
See Section 4, Wiring and Dimensions
1.2 lbf [0.56 kgf]
Any Position
5 g, 20 - 500 Hz
100 % functional tested
160 ma
2.5 ma