Bumpless Transfer Bpls - promesstec UREG 200 User Manual

Alarm 2 Error behavior
Alarm 1 is activated when the controller enters the error mode, at Alarm 1 becomes
ON or OFF depending on the setting of A1FT.
Exceptions: If A1FN = LB or SENB, alarm 1 is switched ON independently of A1FT.
If A1FN = TIMR, no error is output on alarm 1.

6.16 Bumpless Transfer BPLS

BPLS is a setting for transmission in case of error,
the function is adjustable for output 1 and output 2
(OUT2 must be set to COOL).
Bumpless Transfer is activated when O1FT and/or
O2FT = BPLS and one of the following conditions is
met.
1. during power on (for 2,5 sec.)
2. the controller goes into error mode
3. the cotroller goes into manual mode
4. the controller goes into calibration mode
When BPLS is enabled, the controller goes into open loop control and uses the
average values of MV1 or MV2 to control outputs 1 and 2.
Regulation without BPLS
Without BPLS, the controller requires a certain amount of time to return to normal
control after a power failure, during this time there are strong deviations in the pro-
cess. In the event of a sensor failure, the process deviates strongly from the setpoint
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
Bumpless Transfer setting:
1. O1FT = BPLS
2. O2FT = BPLS
Bumpless Transfer active:
1. When switching on (for 2,5
sec.)
2. Error mode active
3. Manual operation active
4. Calibration mode active
E-Mail: office@promesstec.com I Internet: www.promesstec.com
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