Operating Mode; Auto Mode; Manual Mode - Procom DGC-7RR Operating Instructions Manual

8 DG Freq
9 DG Vol
10 Over Speed
11 V-Belt
12 Battery
13 O/C
14 Crank
15 Fuel Sol
16 Mains
17 MCB
18 GCB
19 Generator
20 Auto
21 Man.
22 Test
23 Off
9.0 Lamp Test
Switching on the power of the unit with RESET switch pressed shall force the entire annunciation
LEDS to blink and display shall show the DGC-7R Model type along with the version number of
the software. This state shall persist till the switch is kept pressed and on release of the switch DGC-
7R shall start functioning normally.

10.0 Operating Mode

DGC-7R is equipped with 5 operation modes, namely Auto, Manual, Test, Off and Remote Mode.
The first four modes can be selected by pressing the corresponding switch, from the front panel. The
remote mode is selected by a digital signal at its terminal.

10.1 Auto Mode

DGC-7R monitors the Mains supply, if Mains supply varies beyond set limit of under/over voltage
or under/over frequency or voltage unbalance for more than their individual programmed
supervision time, DGC-7R releases the MCB contactor (to protect the contactor from failure
because of low input voltage) and attempts to starts the generator.
DGC-7R gives cranks the engine by activating the inbuilt, potential free, crank contact. Crank
command is withdrawn if the engine start is detected, either by external engine start input or by
build up of generator voltage. Max duration of crank command is user settable.
In case of non start of the engine DGC-7R re-cranks it till it starts or user programmed crank
attempts are exhausted. If generator fails to start after the maximum programmed crank attempts,
Fail to Start LED starts blinking, indicating start failure and the hooter is switched on.
After successful start of the generator, it is allowed to warm up for a user programmed time before
the load is transferred to generator.
While the generator is running DGC-7R monitors it for external fault (LLOP, HWT, Emergency,
Fuel, V-Belt, Over Current and Canopy temperature) and internal faults on voltage and frequency.
Over Current Fault could also be internal fault in models having provision to measure and
monitor the current.
On persistence of any fault for more than the programmed supervision delay, for that fault,
generator is stopped, corresponding fault is announced & hooter is switched on.
On restoration of healthy mains supply, continuously, for the programmed duration the load is
transferred to the mains and generator is stopped after expiry of re-cooling time. In case mains
again become unhealthy during the re-cooling period the load is switched to generator.

10.2 Manual Mode

DGC-7R, in this mode is under the manual control of the operator for starting and stopping of the
generator. Engine has to be started manually by manually pressing "Start" switch. The "Start"
Cat_DGC-7R-04-08-VERB1-0.doc
This LED blinks when the engine is stopped on frequency fault.
This LED blinks when the engine is stopped on voltage fault.
This LED blinks when the engine is stopped on over speed fault.
This LED blinks when the engine is stopped on V-Belt fault.
This LED blinks when the Auxiliary supply is outside the limits.
Warning only.
This LED blinks when the engine is stopped on over current fault.
This LED lights up while the engine is being cranked..
This LED lights up while the fuel solenoid is active.
Steady while Main is healthy else starts blinking.
Steady when MCB is engaged.
Steady when GCB is engaged.
Steady while generator is running.
This LED is On if the unit is in Auto Mode.
This LED is On if the unit is in Manual Mode.
This LED is On if the unit is in Test Mode.
This LED is On if the unit is in OFF Mode.
DGC-7R Digital Genset Controller
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