ESA Electronic Engineering. Apparecchiature elettroniche per la depolverazione

ELECTRONIC TECHNOLOGIES FOR THE ENVIRONMENT

Sequencers without control dP - Model: PB48

Sequencers with digital dP control From 33 to 48 outputs for electrovalves

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

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

Housing: PS Thermoplastic, 361x254x111 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

Display LED 3 digit

Available functions

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B10b	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 C to select the desired output to be activated. Press key A to activate the output. The output is holded active for all the time that key A 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.
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)
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.
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.
D1a	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. The activation of post-cleaning cycles starts even if C6 contact is open. If contact D1a is open, the display shows '-0-' to indicate cycle stop for fan Off. During the cycles after the fan stop, the decimal points blink on the display. NOTE D1a: Link D1a clamps if it is not used with active inputs (see F01).
D6	ON/OFF Cleaning cycle from external contact.	If contact D6 is open, the cleaning cycle is not enabled and the display shows 'OFF'. With sequencer with digital dP control the display shows 'OFF' and the dP reading alternatively. By closing D6, the cleaning cycle can start from the first electrovalve. NOTE D6: Link D6 clamps if it is not used with inputs from external contact active. (see 5.1 : SETUP F01).
G1	Maximum load power 25W per output
HV	Input / Output voltage selection.	Use the jumpers on the board to select the supply voltage and the output voltage on the electrovalves. • Refer to the documentation for more information