Instruction manual

Page 140
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Description
When
Ultra Wizard = 3 Flow
then
2 = Step Time
Step Time Control allows relays to be used
to control a device, such as a motorised
valve or gate, in order to maintain the level
within two predetermined points. Relays
will energise “ON” when Step Time
condition is in effect and de-energises
“OFF” when Step Time goes off. One
relay will be required to control an increase
in level, (‘open’ the device) and a second
relay is required to control a decrease in
level, (‘close’ the device). Alarm ID
(P212, 222, 232) is used to assign the relay
to control either the open or close
condition. Step Time Control relay requires
three setpoints. The first set point (P213,
223, 233) determines the level, at which
the relay is to be activated, (N.B. level
setpoint for open relay, increase the level,
must be lower than the setpoint for the
close relay, decrease the level). The relay
will energise “ON” after the Limit time
that is set in Relay Setpoint 3 (P215, 225,
235). And turns “OFF”, de-energises, after
the Drive Period that is set in Relay
Setpoint 2 (P214, 224, 234).
The third parameter for each relay determines the assignment or
condition of the relay, where required.
P212, P222, P232 - Relay Alarm ID/Pump Group,
P211, 221, 231 = 1 (Time)
This parameter has no function and will not be displayed.
P211, 221, 231 = 2 (Step Time)
If the relay is selected for Step Time, then this parameter is used to assign
the relay to the 0 = Open condition (increase level) or 1 = Close condition
(decrease level).