Generator control system
Based on VCS183
DS_VCS183
Page 29
Rev. 06
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©Fischer Panda generators Inc.
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Pin 1: Ground (reference) for optically isolated inputs
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Pin 2: Optical isolated input “Combat override” (
Military applications only)
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Pin 3: Optical isolated input “Remote start”
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Pin 4: Optical isolated input “Fire boy”
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Pin 5: Remote power up, internally connected to J1 / pin 3
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Pins 6 and 7: Relay contacts “Alarm”
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Pins 8 and 9: Relay contacts “Status”
NMEA 2000 connector J10
Pin functionality as well as hardware restrictions for these pins is according to NMEA2000 status. Pin
assignment is as listed below:
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Pin 1: Net S
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Pin 2: Net C
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Pin 3: Net H
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Pin 4: Net L
Panels are available with frame and back cover internally connected to power supply negative or with
isolated frame/back cover. In the latter case there still is a connection between supply ground and panel
frame for AC signals across a capacitive path. Seen from a DC standpoint the frame is isolated from
supply ground in such case and may be considered screen for NMEA2000 bus.
I/O hardware requirements / ratings
Optically isolated inputs are intended to provide signal isolation but certainly not safety isolation! When
using optically isolated inputs these are the requirements
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all voltage levels to be understood as
referenced to J8/pin1:
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Permissible input voltage range: -1 .. +32V
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Minimum v
oltage required to detect logic “H”: +9V
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Maximum voltage that may pass as logic level “L”: +2.5V
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Resistive load presente
d to driving circuit: >1.8kΩ
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Capacitive load presented to driving circuit: <1200pF
Remote power up on J1/pin 3 is internally connected to remote power up on J8/5. Voltage level on this
pin is defined with reference to panel supply voltage (J1/pin 2):
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Permissible input voltage range: -1 .. +supply voltage
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Resistive load presented to driving circuit: >15kΩ
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Capacitive load presented to driving circuit: <500pF
If optical isolation is not required then power output as provided on J9 may be used to drive remote
control inputs and remote start
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the latter one never providing optical isolation. J9 will provide enough
power to drive at a maximum all 3 optically isolated inputs and the remote power-up.
Status output and alarm output are mechanical contacts, rated max. 28V/max. 0.8mA resistive load.
Contacts have internal self-resetting over-current-protection.
