HOKKIM HAMF-4, Руководство пользователя, Страница: 13 / 15

7) Auto Start
Set the Auto-Manual-Test selector to the Auto position. Open or close the Mains Fail Contact
(depending on your selection). Immediately the MFT On LED will light. After the set time delay,
the following will happen simultaneously: a) The EST On and Up LED will go off. b) The Fuel
Solenoid On LED will light and external fuel solenoid will energize. c) The ASR begins the Crank
and Rest cycles. Each time the Crank LED is lighted the external start relay is energize. Set the
Crank and Rest timer as required.
8) Fail To Start
In step No.7 do not allow the generator to run. That is, neither the GRR or CCR should on.
Depending on your selection, the fail to start alarm will be triggered after the set number of
attempts. Cancel and reset the alarm.
9) Generator Run
After the alarm has been reset the MFT will on again and attempt start the generator. This time
switched on the CCR followed by the GRR. Once the CCR is on, the ASR is disabled and once the
GRR is on the OPT is also on. After the set time delay the OPT up LED will light. This is the stage
the generator is in operation and external fault sensors that was loop through the OPR can be tested.
The GRR contact is taken from an external 240VAC relay usually called the AFR (AC Fail Relay)
connected to the generator incoming bus. The CCR contact is taken from the Speed Sensing Relay
e.g. Hokkim TFQ-1 / M which is DC operated and speed sensing signal taken from the charger
alternator or magnetic pickup. The CCR is for additional safety and sometimes is not used.
10) OPR Fault Simulation
Repeat steps 3, 5 & 6 with fault inputs loop through the OPR 11-14, 21-24, 31-34 & 41-44 contacts.
Fault can only be stimulated after the OPT is up and OPR energized. It can be noted that each time a
fault is stimulated the FMR trips , cutting supply to MFT, SDT, GRR, CCR, OPT & OPR. The EST
will on and after the set delay, up and releases the external stop solenoid. When the stimulated fault
is reset, the cycle will repeat with the MFT on etc. Remember, when shut down occurs, the GRR
and CCR should open. Complete the cycle up to the generator in operation before triggering the
next fault.
11) Automatic Shutdown
Repeat step 9 until the generator is in operation. In normal circumstances, fault does not occur as in
step 10. What will happen is that the Utilities Supply (TNB) will return. When this happen, the
HAMF-8 / 4 will go into the shutdown mode. To test this, set the Mains Fail Contact to the original
position. The MFT On LED will be off and the shutdown timer On LED will light but nothing else
seems to happen. Wait until the set time delay of the SDT and the following will occur. The fuel
solenoid will be cut and EST on. Most probably you only use either one of them. If you bypass the
GRR and CCR on for testing purpose, you should now off them. This will complete the auto
shutdown.
12) Emergency Stop
Along various stages of testing you can test emergency stop by pressing the Emergency Stop button.
In all cases you can see that all relay cards are disabled except the EST. In an emergency situation
the EST is required to shutdown the generator (only if your system is energized stop).
Page 13
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