Bentrup TC 2010 Bedienungsanleitung Seite 31

Table 2: analog output
Analog outputs drive analog devices like steady power control units (thyristor
controls), voltage controlled frequency converters or recorders. The analog output
provides a voltage (0 to 10V) or current (0/4 20mA) signal. Either a process value
(e.g. heating, cooling) or a process value (e.g. setpoint 0 1400°C) can be sent to an
analog output.
.
00: output mode
Sets the operation mode of the analog output:
PRZ: Analog output uses control loop output to drive a heating resp. cooling
device. Example: Provide a 4 20mA steady output signal (according to 0 to 100%
heating) for driving a thyristor
ANA: Sets the analog output to send an internal process value as analog signal
within adjustable range. Example: Use this mode to create a 0 to 10V output signal
according to 0°C to 1000°C programme setpoint
01: destination
Selects the physical output of the signal
02: output type
Select output signal type 0 10V/0 20mA/4 20mA
following parameters apply on selection PRZ only:
03: channel source
Selects the control loop used to drive the output. The options MX../A resp. MX../G
are the outputs of the air / gas mixer (for combustion devices)
04: output charact
Specifies the operation range of the output. Used to assign an output to either
heating range, cooling range or both rances. Typically the heating output is set to
"0 to +100%" and the cooling output (eg. for controlling a fan) is set to "0 to
100%". Both outputs assigned to the same control loop. The available settings are
30
(options END, PRZ, ANA)
(value range OFF to AO1)
(options 0 5V, 0 10V, 0 20mA,
4 20mA)
(value range LP00 to LP01)
(value range 0 to 4)
0=0% to +100% / 1=+100% to 0% / 2=0% to 100% / 3= 100% to 0% / 4= 100% to
+100% / 5=+100% to 100%
05: outp.% on IDLE
Whenever the controller is IDLE the output provides this value
06: outp. % on ERR
Whenever the controller is in ERROR status the output provides this value. Note
that this only applies on system errors and not an operation error on a single loop
07: min. output %
Lower output signal limit. The output is limited to the given value. Can be used to
obtain permanent minimum heating. Care should be taken since high settings
might interfere with the control loop
08: max. output %
Upper output signal limit. The output is limited to the given value. Can be used 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.)
following parameters apply on selection ANA only:
13: outp. param.
Selects a process value sent to the analog output. The output is set proportional
over the given range of "lower base value" and "upper base value". Example:
Assuming a signal type 0 to 10V / lower base value 0°C / upper base value 1000°C
the output provides 7,5 V on a process value of 750°C
14: lower base val
Sets the lower base value for a process value output. For details refer to the
example given at "outp. param."
15: upper base val
Sets the upper base value for a process value output. For details refer to the
example given at "outp. param."
.
(value range 0 to 100)
(value range 0 to 100)
(value range 0 to 100)
(value range 0 to 100)
(value range SP00 to CH19)
(value range 99 to 1999)
(value range 99 to 1999)
operating instructions bentrup TC20xx V1.9