GMC-I Messtechnik GmbH
R2500–20
Conversion of Parameter Sets
If the binary input is configured to parameter set conversion (
SEt2
), parameter set 2 is loaded when the contact is closed, and paramter set 1 is loaded
when the contact is open. The active configuration is overwritten in each case. The W2 LED lights up when parameter set 2 and/or 3 is active.
Backup Functions
If the binary input is configured to backup function (
bACK
), the momentary actual value is adopted as setpoint value when the contact is closed. Control
is inactive and the manual operation LED lights up. When the contact is open, control is effected with the adopted setpoint value according to configuration.
PI Performance
The differential component of the PDPI controller type can be attenuated to such an extent by activating PI performance (configuration:
PI
=
YES
) that
practically no more derivative action occurs. As opposed to a pure PI controller, response to setpoint changes can be configured without overshooting.
This setting is advisable for control systems which include true delay time.
Extra derivative action for cooling
In controlled systems in which cooling has much better or worse thermal contact than heating, control performance for a cooling work point can be
improved by setting the
tu II
configuration to
EnA
. This makes it possible to set the delay time for cooling (parameter
tu II
) independently.
In the case of
water cooling,
half the derivative action is automatically used for cooling when configuration
tu II
=
diS
has been selected.
Содержание R2500
Страница 1: ...3 349 374 03 19 6 18 R2500 Compact Controllers and Temperature Limiters Operating Instructions ...
Страница 2: ......
Страница 51: ...GMC I Messtechnik GmbH R2500 51 ...