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Ramp & timer combination
7.5 External set point
If SPMD is set to PV1 or PV2, the UREG200 can be
set with an external setpoint value. If SPMD = PV1,
then the external setpoint is connected to input 1 and
the process value to input 2. If SPMD = PV2, then the
external setpoint is connected to input 2 and the
process value to input 1. To achieve this, set the
parameters as follows:
Example 1, external setpoint at input 2
FUNC = FULL
IN2, IN2U, DP2, IN2L, IN2H are set according to the external setpoint.
PVMD = PV1
IN1, IN1U, DP1 are set according to the process signal.
IN1L, IN1H are set, if released, according to the process.
SPMD = PV2
Example 2, external setpoint at input 1
FUNC = FULL
IN1, IN1U, DP1, IN1L, IN1H are set according to the external setpoint.
PVMD = PV2
IN2, IN2U, DP2 are set according to the process signal.
IN2L, IN2H are set, if released, according to the process.
SPMD = PV1
Note:
If PV1 is set for SPMD and PVMD error
code appears
. If PV2 is set for SPMD
and PVMD, error code appears
. Never
use the same PV with SPMD and PVMD, be
cause then the controller cannot regulate
properly.
Setting
FUNC = FULL
SPMD= PV2, PVMD = PV1
or
SPMD = PV1, PVMD = PV2
Error messages
