bentrup TC507 - Page 13

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Upper output signal limit. The output will never exceed this limit. Can be used for instance to limit the
maximum heating of a kiln. Note that limiting can cause problems if the applications lacks of heating power
(gradient check errors etc.)
08: cyclus time
(value range 0 to 100)
Cyclus time (in seconds) of the digital output. The output value is converted into an ON and OFF period
accordingly (T on + T off = T cyclus). Decreasing the cyclus time improves accuracy but might decrease lifetime
of the heating device. A typical value for contactors on kilns is 30
following parameters apply on selection MOT only:
12: channel source
(value range CH00 to CH02)
Selects the control channel (loop) used to drive the output
13: output char.
(value range 0 to 5)
Specifies the operation range of the output. Used to limit an output assigned to a heating / cooling loop (range
+100% to -100%) to the physical range of operation. In an typical application one output (eg. controlling the
heating elements) is set to "0 to +100%" and a 2nd output (eg. controlling a fan) is set to "0 to -100%" (both
outputs assigned to the same control channel). The available settings are 0=0% to +100% / 1=+100% to 0% /
2=0% to -100% / 3=-100% to 0% / 4=-100% to +100% / 5=+100% to -100%
14: outp.% on IDLE
(value range 0 to 100)
Whenever the controller is IDLE the output is fixed to this value
15: outp.% on ERR
(value range 0 to 100)
Whenever the entire controller is in ERROR status the output is fixed to this value. Note that this only applies
on system errors and not an operation error on a single channel
16: travel time
(value range 0 to 250)
Enter the time (in seconds) for the servomotor to move over the entire actual operation range (fully close to
fully open)
17: delay 1/10s
(value range 0 to 150)
Delay time of the servomotor on direction changes. This parameter (given as 100ms units) is used to
compensate for gearbox lags etc.
18: update time
(value range 0 to 250)
Rate in seconds the servomotor position is updated. Decreasing this rate causes more stress to the servomotor
19: hyst. %/steps
(value range 0 to 100)
Hysteresis for updating the servomotor position. Decreasing this rate causes more stress to the servomotor.
However, in most application a hysteresis of 1% is recommended
20: feedback input
(value range OFF, IN00 to IN03)
The position feedback option is used for best tracking of the actual servomotor position. Typically a position
potentiometer is connected to an analog input (configured as linear resistance input 0-100%). Enter the
process parameter number of this input here. Set to OFF is unused
21: steps (MOT808)
(value range -9999 to 9999)
no explanation available
following parameters apply on selection LIM only:
22: compare mode
(options 1>2+c, 1<2+c, dif<c, dif>c)
Selects the kind of equation of the formula given as limit 1 ? limit 2 + limit const. The "?" is replaced depending
on this parameter: 0 stands for ">=", 1 stands for "<=", 2 means "limit 1 - limit 2 less then limit const", 3 means
"limit 1 - limit 2" more than limit const. The digital output is ON when the equation is true. Example: To activate
the output whenever the actual temperature exceeds the setpoint more than 30°K (= overtemperature alarm)