9400200990 Rev I DGC-2020 LSM-2020 (Load Share Module) 8-1
SECTION 8 • LSM-2020 (LOAD SHARE MODULE)
GENERAL INFORMATION
The LSM-2020 is a remote auxiliary device that interfaces to the DGC-2020 and provides analog outputs
to the power system in the form of analog bias signals to the voltage regulator and speed governor. When
the breaker is closed and Load Sharing is enabled, the LSM-2020 will share real power load
proportionally with the other generators on the Analog Load Share Line.
FEATURES
LSM-2020’s have the following features:
• A Ramping Function to load and unload generators smoothly
• Communications via Ethernet, CANBUS, or USB
• Demand Start/Stop and Generator Sequencing
• KW Load Control
• KW Load Sharing via analog load share lines
SPECIFICATIONS
Operating Power
Nominal: 12 or 24 Vdc
Range: 8 to 32 Vdc (Withstands cranking ride-through down to 6 Vdc
for 500 ms.)
Terminals: P2-3 (–), P2-2 (+), P2-1 (chassis ground)
Analog Outputs
Burden Data: 4-20 mA = 500Ω maximum burden, ±10 Vdc = 667Ω minimum burden
Voltage Regulator Bias Output
4-20 mA or ±10 Vdc isolated output signal. (Selectable in increments of 0.1.)
Isolated to 1,500 Vdc between outputs and ground
Terminals: P2-18 (AVR+), P2-17 (AVR–), P2-16 (AVR’)
Governor Bias Output
4-20 mA, ±10 Vdc isolated output signal. (Selectable in increments of 0.1.)
Isolated to 500 Vdc between outputs and ground
Terminals: P2-15 (GOV+), P2-14 (GOV–), P2-13 (GOV’)
Load Share Line Output
0-10 Vdc isolated output signal. (Selectable in increments of 0.1 Vdc.
Isolated to 500 Vdc between outputs and ground
Terminals: P2-6 (LS+), P2-5 (LS–), P2-4 (LS’)
Communication Interface
CANBus
Differential Bus Voltage: 1.5 to 3 Vdc
Maximum Voltage: –32 to +32 Vdc with respect to negative battery terminal
Communication Rate: 250 kb/s
Terminals: P2-12 (low), P2-11 (high), and P2-10 (shield)
Ethernet
Rear-panel RJ-45 connector provides remote communications via BESTCOMSPlus to the LSM-2020 and
to the DGC-2020 that the module is connected to.
Type: 10/100BASE-T
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