EWS ES2030 CV, Instruction Manual

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ES2030 CV Display and modification of the basic settings 12
1. Electrical control
IMPORTANT!
When valve systems operate at 24 V, current loading may be very high especially if the
regeneration valve and several service valves are actuated simultaneously.
It is possible to switch on the motor(s) and valve(s) with a time delay of 30 seconds.
This time delay feature can be selected as follows:
1. Switch the power on to the controller while the key is pressed.
the display indicates Motor valve Y/N.
2. Use the key to enter "Y" for the time delay and "N" for simultaneous switching of the
motor(s) / valve(s).
3. Press the key once again.
Alternate switching
In alternate switching (also known as follow on control) the voltage changes
between terminals 5-6 and 5-7 (12-13 and 12-14) as soon as the next switching
stage is triggered.
NOTE: In the case of 5-phase alternate switching, the fifth switch stage is triggered
by applying voltage to terminals 5-8 (12-15).
The following diagram shows the triggering voltage on terminals 5-6 and 5-7 (12-13
and 12-14) in a four-stage valve. The fourth stage, “Service“ or “Standby“, which
follows on at the end of regeneration, is not shown.
Example : 4-stage alternate switching
The number of stages is determined at program step 2.1, and the length of the
individual regeneration phases at program step 4.1.
Pulse switching
In pulse switching a pulse is sent to terminals 5-7 (12-14) immediately the next
switching phase is triggered.
The following diagram shows the triggering voltage on terminals 5-6 and 5-7 (12-13
and 12-14) in a four-stage valve. The fourth stage, “Service“ or “Standby“, which
follows on at the end of regeneration, is not shown.
Example : 4-stage pulse switching
The number of stages is determined at program step 2.1, the length of the triggering pulse
at program step 3.1 and the length of the individual regeneration phases at program step 4.1.
NOTE: The length of the individual regeneration phases is increased by the length
of the triggering pulse.
Step no.: 1.1
Changeover Y/N
Step no.: 1.2
Pulse Y/N
Start
Yes No
1.1
2.1
Yes No
1.2
2.1
1.3
Phase1 Phase2 Phase3
Electrical signal
Stages 2
min
Regeneration end Regeneration start
Phase1 Phase2 Phase 3
Electrical signal
Stages
Regeneration end Regeneration start
Adjustable pulse length