46
Bentone
7.10 Thermal shock protection (TSS) rAFC
The RWF50… can be operated as a fixed value controller with or
without ramp function.
ConF
rAFC
Parameter
Value/
selection
Description
Function
FnCt
Function
0
1
2
Switched off
Gradient Kelvin/minute
Gradient Kelvin/hour
Note!
With FnCt = 1 or 2, Thermal shock protection (TSS) is automatically
activated as soon as the actual value drops below the adjustable
absolute limit value
rAL
(heating controller) or exceeds it (cooling
controller).
Ramp slope
rASL
Ramp slope
0.0
...
999.9
Slope of ramp slope (only with functions 1 and 2)
Tolerance band ramp
toLP
Tolerance band ramp
2 x |HYS1
=
10...9999
Width of tolerance band (in K) about the setpoint (only with function 1
and 2).
Heating controller:
Smallest possible factory setting:
2 x |HYS1| = 10 K
To monitor the actual value in connection with thermal shock
protection (TSS), a tolerance band can be laid about the setpoint curve.
If the limit values are crossed, the ramp is stopped.
See chapter 5.7 Thermal shock protection (TSS) in the enclosed manual.
Cooling controller:
Smallest possible factory setting:
2 x |HYS4| = 10 K
Note!
In the event of a faulty sensor or manual control, the ramp function is stopped. The outputs behave the same
way they do when the measuring range is crossed (configurable).
Functions ”Cold start of plant” and ”Thermal shock protection (TSS)” are interlocked.
Only one function can be activated, but never both at the same time.
Limit value
rAL
Ramp limit
0
...
250
Heating controller:
If the actual value lies below this limit value, the setpoint is approached
in the form of a ramp until final setpoint
SP1
is reached.
Cooling controller:
If the actual value lies above this limit value, the setpoint is approached
in the form of a ramp until final setpoint
SP1
is reached.
Summary of Contents for STG 146i/2
Page 34: ...34 Bentone 6 2 Wiring diagram...
Page 123: ......
Page 124: ...Enertech AB P O Box 309 SE 341 26 Ljungby www bentone com...
