ESA Electronic Engineering. Apparecchiature elettroniche per la depolverazione

Sequencers with control dP - Model: DC32

Sequencers with digital dP control From 17 to 32 outputs for electrovalves

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

Housing: ABS, 321x260x142 mm, IP65

Voltage electrovalves: 24 VAC, 115 VAC, 230 VAC / 50 ÷ 60 Hz, 24 VDC

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

Power consumption: 10 VA (Stand-by) - 30 VA Max

Manuals available in Italian, English, French, German

•• For other languages contact the Technical Department

Available functions

Please LOGIN to see the prices

Some options on request. Contact us for other options
	C11a	4÷20 mA output signal of dP readout	4÷20 mA output signal corresponding to the dP reading. The signal is active, supplied at 12VDC by the device, the maximun drived load is 450 Ohm. 4mA = dP reading 0.00 kPa, 20 mA = dP reading equal to the full range requested. If an external voltage is applied to C11a clamps the device will be damaged. • A: Max 450 Ohm
Video	Standard features
	A1a	Minimum and maximum dP alarms on the same relay (K2)	Minimum and maximum dP alarms act on the same relay. The display will specify the type of alarm. • A: Relays • B: Terminal board • C: Minimum dP alarm on models with 3-digit display • D: Minimum dP alarm on models with LCD display • E: Maximum dP alarm on models with 3-digit display • F: Maximum dP alarm on models with LCD display
	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
	AL1	Alarm relay contacts open	The relay contacts signaling the presence of alarm are open if there is no supply or in presence of alarm condition. With power supply on and in the absence of an alarm, the contact is closed. Relay contacts: 42 VAC - 5 A Max / 42VDC - 3A Max • A: Contact open in alarm
	B10	Manual activation of every single output 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.
	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.
	B3c	Interval time between ev. during post-cleaning	Interval time between two activations settable by keyboard when post-cleaning cycles are active and during the forced cycles of option C2x if available. The selection range is the same as the inteval time in standard operation mode (B3x).
	B3x	Interval time from 1 to 999 sec.	If the pulse time is lower than 1 sec. it is possible to set any interval time value in the range indicated. If the activation time is higher than 1 sec. the minimum settable interval time is: Minumum interval time = 5 times pulse time (B2x)
	B8b	Short-circuit protection of every single output	In case of short-circuit, the corresponding output is automatically skipped. Relay K2 will signal the alarm condition and display will show the alarm situation code E1 (See the alarm description). Press key E to reset the alarm.
	C0	Input activation from external contacts	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.
	C1	Digital differential pressure control (STOP at cycle end)	In automatic running mode (C4a), the cleaning cycle is activated and deactivated according to the dP readout. 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). C1b Set the cleaning START threshold: if dP is above this threshold, the cleaning cycle is activated (Set 14)
	C13_10	dP full range 10.00 kPa = 100.0 mbar = 1012 mmH2O.	Maximum differential pressure value measurable by the device 10.00 kPa = 100.0 mbar = 1012 mmH2O. With dP reading over 10 kPa the display shows 'E' instead of the numeric value of dP.
	C4	Cleaning cycle	If all the requirements for the start-up of the cleaning cycle are fulfilled when supply is powered on (e.g. fan on, external consents C6 or D5, dP readout above the start threshold), the sequencer will automatically activate the EV outputs sequencially according to the times set by keyboard.
	C4a	Automatic operation mode	By keyboard in Setup it is possible to select the operation mode. 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.
	C4b	Manual operation mode	By keyboard in Setup it is possible to select the operation mode. In manual mode, the control of the fan, the dP, C6 and D5 are not active.
	C7c1	Minimum dP alarm. Automatic reset.	If the dP readout is below the threshold set 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. With set value '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.
	C7d1	Maximum dP alarm. Automatic reset.	If the dP readout is above the threshold in Set up, the maximum dP alarm is activated. The display shows the alarm condition code E7 (see the alarm description) or the dP readout and letter H alternatively, according to the model. The corresponding alarm relay will signal its condition. The alarm is automatically reset when the dP readout is below the alarm threshold again. The activation of this alarm is delayed by 20 seconds by default.
	C8	dP zero 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, with plant stops or air pipes not connected if the dP reading is not 0.00 kPa it is possible to adjust it by key A and C.
	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.
	D1b1	Post-cleaning cycles from dP readout. Activation at STOP.	In automatic operation mode, you can 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 shows 'FAN STOP'. The display shows 'POST-CLEANING ACT' during additional cycles and if there is no alarm. Post-cleaning cycles are activated only if the dP readout should reach the threshold value of cycle STOP in normal operation mode.
	D5a	Consent from external compressed air pressure switch	If the operation mode is automatic and contact D5a is open, the cleaning cycle stops, relay K2 indicates the alarm situation. Close D5a to restart the washing cycle from the point where it had stopped. If contact D5a is open, the display shows alarm code E6. NOTE: Link D5a clamps if it is not used with inputs from external contact active. • A: Contact D5a Open • B: Contact D5a Close • C: Alarm Relay Contact Open • D: Alarm Relay Contact Close
	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
	DPa	Air connections 6x4 RILSAN pipe
	G1	Maximum load power 25W per output
	HVB	Input and output voltage selection	Use the jumpers on the board to select the supply voltage and the output voltage for the electrovalves. (See the drawing of the printed circuit layout).• JP1: Select the supply voltage between 115VAC and 230VAC.• JP2: Select the output voltage between 24, 115, 230 V (Only when the power supply is 115VAC or 230VAC).• JP3: Select the output voltage between AC and DC only when JP2 is set to 24V. ATTENTION: 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.
	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