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HIMA F8621A Control module

The program sequence may be customised by changing the parameters. Attention: All modifications must comply with the requirements of the valid standard. DUNGS shall not assume any liability for material or personal damage caused by improper use or parameter setting of the automatic gas burner control system. *1 The monitoring of the LDW depends on the operating mode set in P16. *2 V1 can be deactivated via parameter P38 after the second safety time (= interrupted start gas) *3 The two inputs Flame 1 and Flame 2 can be activated or deactivated independently of one another per parameter for phase 1 and phase 2. *4 Both flame inputs must be off! *5 With "Flame on", it will run with 15 minutes of follow-up after a regular switch-off. After 24h OFF, the signal will be activated for 1 minute. *6 The input "Flame 2 NC" can also be configured as GDW. The GDW tolerates faulty signals of up to 1s. *7 The follow-up time already starts during the "Post-purge" state. If the post-purge is greater than/equal to the followup time, the "Follow-up time" state will be skipped. *8 The MPA can also run in two-stage operation (P38=2). The selection of stage 1 / stage 2 will then be made via a field bus (e.g. Profibus, Modbus,...). V1 is always open (=stage 1). V2 will open after a field bus setpoint input (=stage 2). In the operating modes "interrupted start gas" (P38=0) and "permanent start gas" (P38=1), V2 is always ON. *9 The input "Flame 2 NC" can also be configured as Proof-Of-Closure (POC) as a function of output V1 or V2. The POC tolerates faulty signals of up to 1s. *10 In the operating mode P38 = 2 (two-stage operation), the second safety time is skipped, and the MPA goes from "Pause 3" directly to the "Operation" state!

Manual operation

If the switch is on "Para" for the parameter mode, the MPA stops in this state. Press the "Next" key (unlock key) to continue with the next state. If you do not press any key during 30 minutes, the automatic gas burner control system restarts or indicates an error. The manual mode may only be cancelled after having run completely through all states and after having reset the parameter switch to automatic mode. If you reset the parameter switch before reaching state H5 and you have modified parameters, they are not yet applied, and the automatic gas burner control system indicates an error (see also P10).

If the switch is on "Para" for the parameter mode, the MPA stops in this state. Press the "Next" key (unlock key) to continue with the next state. If you do not press any key during 30 minutes, the automatic gas burner control system restarts or indicates an error. The manual mode may only be cancelled after having run completely through all states and after having reset the parameter switch to automatic mode. If you reset the parameter switch before reaching state H5 and you have modified parameters, they are not yet applied, and the automatic gas burner control system indicates an error (see also P10).