ESA Electronic Engineering. Apparecchiature elettroniche per la depolverazione

BUS-SYSTEM without control dP - Model: Ex22DSR

LCD alphanumeric display 32 characters multilanguage

(Italian, English, French, German, Spanish)

Supply voltage: 115 VAC ÷ 230 VAC / 50 ÷ 60 Hz (Standard)

Supply voltage (On request): 24 VAC / 50 ÷ 60 Hz - 24 VDC

Operating temperature: - 10 ÷ + 50 °C (Standard)

1 serial BUS (12 remote units)

Voltage electrovalves: 24 VDC

Housing: ABS, 240x185x114 mm, IP65

Manuals available in Italian, English, French, German

For other languages contact the Technical Department

Available functions

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A2a	Relay Voltage ON (K1)	If the device is supplied, relay K1 is activated and the terminal board contact is closed. In case of power failure, this contact is open. • A: Relays • B: Terminal board
B10a	Manual activation of every single output from keyboard	From the keyboard you can manually and individually activate every single output for an operation test. Press key C over and over again to activate outputs sequentially. The output is kept active as long as key C is held down and the display shows ON. When key C is relesed, the number of the output will increase automatically to the next one. 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.
B1b	Selection Number of outputs	The selection of the number of outputs to be controlled 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 outputs. Minimum load 5W ÷ 12 W depending on the output voltage. If the load is below 5 W, autoselection does not work properly. Set the number of outputs in set up.
B2x	Activation time from 0.05 to 5.00 sec.
B8a	Short-circuit protection of every single output	In case of short circuit, the output is automatically skipped, the relay K1, normally active, is deactivated and the terminal board contact opens. The display alternatively shows code E1 and the number of the faulty output. Press key B to reset the alarm.
B9b	Electric control of output activation	If a solenoid valve is not activated, the relay K2 indicates the alarm condition and the display shows the alarm condition code E2 (See alarms description). Press key 'E' to reset alarm condition. ATTENTION: this function will be active only if the automatic selection of the load in set up is not selected. The alarm switches on after 5 consecutive fails on the same output.
C4c	Cleaning cycle	If all the conditions necessary for the start of cleaning cycle (e.g. fan On, external consents C6 or D6 present) are present when supply voltage is switched on, automatically the device activates the outputs in sequencial way with timing set by keyboard
C6a	ON/OFF cleaning cycle from external pressure switch. STOP at the end of the cycle	With digital inputs enabled and with contact C6a open the cleaning cycle stops at the end of the cleaning cycle and display shows 'CYCLE STOPS FOR LOW dP'. When C6a is closed the cleaning cycle restart. NOTE. Put a wire between the clamps of input C6a if not used with inputs enabled.
D14a	Operation hours-counter	In Setup it is possible to visualize an hours counter. This counter is active when the cleaning cycle in On. In case of fan stop, consent D6 not present or with the device in Setup the counter stops.
D1a3	Additional cycles from voltfree contact. ALWAYS enabled.	By connecting an NO auxiliary contact of the circuit intended to drive the fan with the sequencer, 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. Post-cleaning cycles are activated even if dP = 0 or C6x open. If contact D1a3 is open, the display shows the indication of fan stop (See operation table 6.1). The display shows 'POST-CLEANING ACT' or decimal points blink, according to the model, during additional cycles. NOTE. Jump D1a3 clamps if it is not used with inputs enabled.
D6a	ON/OFF cleaning cycle from external contact	If contact D6a is open, the cleaning cycle is not enabled and the display shows 'START CONTACT D6a OPEN'. Close D6a to start cleaning cycle from the first electrovalve. NOTE D6a: Jump D6a if it is not used with inputs from external contact active. • A: Contact D6a Open • B: Contact D6a Closed
HVA	Input voltage selection	By some jumpers on the board it is possible to change the supply voltage. (See label on the device pr board layout). The ouput voltage for the electrovalves (BUS line) is fixed 24VDC. JP1: Supply voltage selection between 115VAC or 230VAC.
SL	Multi language display	In Set up it is possible to select the language of all the descriptions showed by the display: • Italian • English • French • German • Spanish