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In sleep mode:
1. switches off the display, only the decimal point flashes cyclically.
2. switch off the outputs and alarms.
Switch off sleep mode:
1. Press
to switch off the sleep mode, or
2. Switch the mains voltage off and on again.
Factory setting: SLEP = NONE (Sleep mode disabled)
7.12 Pump control
The UREG200 has a special program item, pump control.
Most often, the pressure is generated in a process via a variable speed pump. The
problem is often that the pressure curve of the pump is not linear to the speed. This
can cause the process pressure to fluctuate greatly, and when the pump is at a
standstill, pressure losses often occur due to leaks in the pump.
With the UREG200 this demanding control task can be done. For this purpose,
please make the following settings:
Pump control settings:
FUNC = FULL
EIFN = NONE
PVMD = PV1
FILT = 0.5
SELF = NONE
SPMD = PUMP
SP2F = DEVI
And set values for the following parameters:
REFC = Reference constant
SP2
= Enter a negative value, this will be set to the setpoint value
(SP1) added, set point = (SP1 + (-SP2)) to achieve a stable pump still
sand to be achieved.
Without UREG200, the pump reduces speed when the process pressure is close to
the setpoint, but usually does not stop completely.
To prevent this, the UREG200 periodically checks the process with the aid of the
reference constant (REFC) (prerequisite SPMD = PUMP). If the check shows that
the process continues to consume pressure, the pump is controlled accordingly. If
the process no longer consumes pressure, the controller switches off the pump
and reduces the setpoint = (SP1 + (-SP2)) by the value set in SP2. This creates a
stable shutdown and a demand-oriented downtime. Note that SP2 must have a
negative value.
promesstec GmbH I Niedersachsenstraße 4 I D- 48465 Schüttorf I Tel.:+49 (0)5923/ 90 229 0 I Fax:+49 (0)5923/ 90 229 29
Main parameters
SPMD
SP2F
REFC
SP2
E-Mail: office@promesstec.com I Internet: www.promesstec.com
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