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Back to [Frequently
Asked Questions]
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FAQs:
dTRON 16.1 Compact Controller |
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The
settings at the configuration level (C111, C112...) cannot
be altered.
Cause: The
configuration level was not called up via the parameter y.0
(also see Operating
Instructions, Chapter 5.2 "Principle of
operation" ).
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The
red indicator flashes "1999" or
"9999".
If
"1999" flashes, this means that either no
measurable signal is present (probe break) or the
configuration under C111 is incorrect.
1. Check the measurement signal (resistance measurement,
current/voltage measurement), if necessary, define values
using a signal source.
2. Check configuration code C111 (default setting Pt100,
Chapter 7.1 of the Operating
Instructions)
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The
green indicator flashes "1999" or
"9999".
This signals
that an over/underrange condition of the external setpoint
has occurred.
This includes:
- probe break/short circuit
- setpoint outside the specified range (SCL, SCH)
- display overflow
- configuration in C111 is not correct
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Can
the dTRON 16.1 be configured from a PC?
A PC
setup program for configuring the controller from a PC
is available for the dTRON 16.1. As well as the PC
program, JUMO Part No. 70/00400027, you will need an
interface cable with a special adapter for the dTRON 16.1.
The JUMO Part No. for the interface cable is 70/00400821.
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Switch
between current and voltage for the analog output.
The
analog output (output 3) is an optional output and not
included in the standard instrument. If the output has
been included in the order, then the switch of the output
from current to voltage or vice versa can be carried out
at the configuration level C 114. However, this will also
require a hardware alteration:
| Output
signal range |
Solder
link S 601 (S1) |
Solder
link S 602 (S2) |
| 0/4
- 20 mA |
open |
open |
| 0/2
- 10 V |
closed |
closed |
The
links must be altered accordingly.
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Input
1: Hardware alteration between universal input and 0 - 10
V.
On
a standard universal input (resistance thermometer,
thermocouple, current) the solder links S101 and S102 on
the CPU board are assigned as follows:
- solder link S101 a and b joined
- solder link S102 open
If input 1 has to operate on 0 - 10 V,
the solder links on the CPU board have to be changed as
follows:
- solder link S101 a and c joined
- solder link S102 closed
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Which
values are determined by auto-tuning and how long does
auto-tuning take?
Depending on
the selected controller type, the following parameters are
determined through auto-tuning:
| Controller
type |
Parameter |
| 2-state
controller ON/OFF function |
Pb1,
dt, rt, Cy1, df |
| 3-state
controller |
Pb1,
Pb2, dt, rt, Cy1, Cy2, df |
| Proportional
controller |
Pb1,
dt, rt, df |
As soon
as auto-tuning is started from the “ Exit “ key (hold
down for 2 sec), the controller attempts to determine the
time response of the process by applying step changes in
the manipulating variable. Auto-tuning evaluates the
development of the process value resulting from these
changes in the manipulating variable and calculates the
controller parameters. During auto-tuning, you will see
“ tune “ flashing in the bottom display.
On termination of the auto-tuning procedure, “ tune “
ceases to flash.
The duration of the auto-tuning procedure depends on the
time response of the controlled process. If the process
reacts relatively quickly to the changes in manipulating
variable, then auto-tuning may be over in a matter of
seconds or minutes. With slow processes, auto-tuning may
take half an hour or longer.
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