Setup, Network and Communication Manual ESTM / ESTM-L
17-88C1-*
11-88C1-7D0002
Notice
Technical data subject to change without notice.
No claims for damage arising from alternations, errors or misprints shall be allowed.
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4.8.1
Controller
Controller Response:
Asymmetric hysteresis up two point controller.
If the hysteresis is set, too low, increased contact
abrasion may result. This will significantly reduce the
lifetime of the device.
If the hysteresis is set too high, the temperature of the
heater or the work piece may increase. This can lead to
an exceeding of the process temperature.
Set the hysteresis as low as necessary and as high as
possible.
Function
Description
action / - effects on / valid values ranges
Sensor 1 actual value:
Measured value at Pt 100 terminal
“TC1”
-50°C to 500°C / 58°F to 932°
fault indication: 999
see: 4.8.5 Alarm Status
Sensor 2 actual value:
Measured value at Pt 100 terminal
“TC2”
Process control value
Depending on the Sensor setup calculated Value
to be controlled
-50°C to 500°C /-58°F to 932°
see: 4.8.6 Sensor Setup
set point controller
When the “Process control Value” is below this
value the Heater will switch on
-50°C to 500°C / -58°F to 932°
- Control relays
Hysteresis
switch off heating if Process control Value above
Set point + Hysteresis
3K-15K
- Control relays
Min alarm sensor 1
Adjustable alarm value
low temperature alarm sensor 1
If measured Temp @ sensor 1
“Sensor 1 actual
value
” is lower than “Min alarm sensor 1”. Then
alarm and the corresponding flag will activate.
- open failure contact
- alarm LED local display
- Modbus Input Register 71.1 (faults)
555°C / 1031°F = alarm off
Pre alarm sensor 1 min
Adjustable warning value
low temperature warning sensor 1
If measured Temp @ sensor 1
“Sensor 1 actual
value
” is lower than “Pre alarm sensor 1 min”.
Then alarm and the corresponding flag will
activate.
- Modbus Input Register 72.3 (status)
555°C / 1031°F = alarm off
Max alarm sensor 1
high temperature alarm sensor 1
If measured Temp @ sensor 1
“Sensor 1 actual
value
” is higher than “Max alarm sensor 1” then
alarm and the corresponding flag will activate.
The load contact is also switched off.
- open failure contact
- alarm LED local display
- load contact off
- Modbus Input Register 70.6 (faults)
555°C / 1031°F = alarm off
Min alarm sensor 2
Equivalent to sensor 1
- Modbus Input Register 71.2
Pre alarm sensor 2 min
Equivalent to sensor 1
- Modbus Input Register 72.4
Max alarm sensor 2
Equivalent to sensor 1
- Modbus Input Register 70.7