ESA Electronic Engineering
SETTING FOR MODEL DB - LDB (SETUP)
Set 01 ENABLE / DISABLE digital inputs from external contacts
Setup

0 = Disabled
1 = Enabled

In Set up you can activate or deactivate the control of all the inputs of the device.
If inputs are deactivated, they are considered as always closed and no jumper is required on the terminal board.
Use a jumper for unused inputs if you activate them.

NOTE: all inputs of the device have to be connected to external contact without voltage.
Set 02 Operation selection AUTOMATIC / MANUAL
Setup:

0 = Automatic (Cleaning by dP values)
1 = Manual

In automatic mode, the controls of the fan, the dP, C6 and D5 are active and the activation of the cleaning cycle will depend on such functions.

In manual mode, the control of the fan, the dP, C6 and D5 are not active.
Set 03 Pulse time
Pulse time from 0.05 to 5.00 sec.
Set 04 Interval time
Interval time between ev. from 1 to 999 sec.
Set 05 Interval time between ev. during post-cleaning
Interval time between ev. during post-cleaning from 1 to 999 sec.
Set 06 Number of additional cycles after fan stop
By connecting an auxiliary volt-free contact of the fan circuit with the sequencer, it is possible to add a well-defined number of cleaning cycles after the stop of the fan.
Their number is selectable from 0 to 99 from the keyboard.
Set 07 Number of cleaning solenoid valves selection
The selection of the number of outputs to be control led is connected by keyboard in SET MODE.
If you set 0 or AUTO in this function the sequencer will automatically select the connected loads by skipping the non connected ones.
Minimum load 5W ÷ 12 W depending on the output voltage.
If the load is below of the minimum, the autoselection does not work correctly, set the number of outputs in set up.
Set 08 Manual TEST of every single ev. from keyboard
By keyboard, it is possible to activate manually and individually every single output for an operation test.
Press key A to select the desired output to be activated. Press key C to activate the output.
The output is holded active for all the time that key C is pressed. It allows to measure the output voltage by using a tester.
In case of anomalous operating, do this test with electrovalves disconnected.
Set 09H Functioning hour counter (Thousand, Tens of thousand)
Set 09L Functioning hour counter (Units, tens, hundreds)
Set 10 Zero dP readout regulation
In this set up code it is possible to adjust the zero reading of differential pressure.
In this function the display shows the dP reading and, when the plant stops or air pipes are not connected, if the dP reading is not 0.00 kPa, it is possible to adjust it by key A and C.
Set 11 dP threshold for cycle activation after fan stop
In automatic operation mode, it is possible to add a pre-set number of cleaning cycles after the fan stop. Their number can be set from 0 to 99 by keyboard. The sequencer will automatically recognise the fan state by comparing the dP readout with the threshold in set code 11: dP > set 11 = fan on, dP < set 11 = fan off.
Post-cleaning cycles are activated even if dP = 0.
When the fan is off or dP < set 11, the display DS2 shows '--'.
On the display DS2 during additional cycles the decimal points blink.
Post-cleaning cycles are activated only if the dP readout should reach the threshold value of cycle STOP in normal operation mode.
Set 12 Minimum dP alarm threshold
Setup:

E = Min dP alarm excluded
x.xx = min dP alarm threshold value

If the dP readout is below the threshold in Set up, the minimum dP alarm is activated. The display shows the alarm condition code E8 (see the alarm description) or the dP readout and letter L alternatively, according to the model.
The corresponding alarm relay will signal its condition. The alarm is automatically reset when the dP readout is above the threshold again. If set to 'OFF' or 'E' (according to the model), the function is excluded. NOTE: the minimum dP alarm is delayed by 60 seconds by default after the activation of the first cleaning cycle.
Set 13 1st dP threshold, STOP cleaning since dP low
C1a Set the cleaning STOP threshold: if dP is below this threshold, the cleaning cycle stops and the display shows 'CYCLE STOP FOR LOW dP' or the letter 'P' according to the model. The cleaning cycle stops at the end of the cycle (Set 13).
Set 14 2nd dP threshold, START cleaning since dP high
In automatic running mode (C4a), the cleaning cycle is activated and deactivated according to the dP readout.
C1b Set the cleaning START threshold: if dP is above this threshold, the cleaning cycle is activated (Set 14)
Set 15 Maximum dP alarm threshold.
Set 18 Output voltage selection for ev. (see HVB). Necessary for right operating of B8b
Set the same output voltage you have selected by means of the jumpers to adjust the trip threshold of the short-circuit.
Otherwise, the sequencer might malfunction or be damaged.