ENGINE AR 1955876 - Caterpillar

Illustration 2 g02695036The warning message is to inform the user that the CDVR firmware has configuration parameters that are not supported by the version of Cat ET used by the computer. If the latest version of the CDVR is set to the supplier defaults, the user can press the "OK" button and proceed as normal.Configuration Parameters of Latest CDVR
Settings groups
Programmable input and associated parametersSupplier Defaults
Setting groups support level set to "single group"
Programmable input set to "fault reset"Part Numbers
Table 1
Earlier Part Numbers Current Part Numbers
CDVR 314-7755 361-8010
CDVR Firmware 318-4763 361-1006
CDVR PC Software 252-7515 367-5010
Required Cat ET Software ET2011A or later Connectors
Connector "P6"
Illustration 3 g01013614
Pin out for the "P6" connector on the CDVR
Table 2
P6 Terminal Functions
Terminal Function
P6-1 Power Input (single phase)
P6-2 Power Input (single phase)
P6-3 Power Input
P6-4 F-
P6-5 F+
P6-6 Chassis Ground Connector "P9"
Illustration 4 g01013761
Pin out for the "P9" connector on the CDVR
Table 3
P9 Terminal Functions
Terminal Function
P9-1 CANbus - High
P9-2 CANbus - Low
P9-3 CANbus - Drain (shield)
P9-4 Contact Sense - Lower
P9-5 Contact Sense - Raise
P9-6 Contact Sense - Common
P9-7 Contact Sense - Excitation Disable
P9-8 Contact Sense - Fault Reset(1)
P9-9 Contact Sense - Var/PF Enable
(1) Refer to the "CDVR Changes" section of Specifications, Systems Operation, Testing and Adjusting, RENR7941. In the earlier firmware version, the switch input is a fixed function for "fault reset". In latest firmware version, however, the switch is defined as a "programmable input" and can be configured. However, the supplier default setting remains "fault reset".Connector "P12"
Illustration 5 g01013628
Pin out for the "P12" connector on the CDVR
Table 4
P12 Terminal Functions
Terminal Function
P12-1 B-phase generator current sensing (CT1)
P12-2 B-phase generator current sensing (CT2)
P12-3 10 DCV Input (B), -
P12-4 Alarm Output Driver (24 V, 100 mA)
P12-5 Fault Shutdown Driver (24 V, 100 mA)
P12-6 10 DCV Input (A), +
P12-7 18 to 30 V Control Power Input (B-)
P12-8 18 to 30 V Control Power Input (B+)
P12-9 Driver Supply (50) (24 V, 100 mA)
P12-10 Generator Voltage Sensing - C (T3), lead 20 for SR4 and SR4B generators)(1)
P12-11 Generator Voltage Sensing - B (T2), lead 24 for SR4 and SR4B generators)(1)
P12-12 Generator Voltage Sensing - A (T1), lead 22 for SR4 and SR4B generators)(1)
(1) Refer to the generator set wiring diagrams.The CDVR has the following features:
Three control modes:
Automatic voltage regulation (AVR)
Power factor (PF) regulation
Reactive power (VAR) regulation
Programmable stability settings
Soft start control with an adjustable time setting in AVR mode
Dual slope voltage versus frequency (V/Hz) characteristic
Three-phase or single-phase voltage sensing
Single-phase current sensing
Field current and field voltage sensing
Ten protection functions