STORK TRONIC ST48-WHDVM.04 User manual

ST48-WHDVM.04
Differential temperature controller
Order number 900304.006
Old Id.Nr.: 141648
Wiring diagram
Product description
The PID differential temperature controller with two 3-digit LED seven segment displays, 4 keys
and 3 relays is variably applicable due to its freely programmable general functions. The relay
contact K1 directly affects the main setpoint, formed by reference variable and the given offset
temperature. Contact K2 affects the secondary setpoint which is formed by the main setpoint via
overlap or which alternatively can be freely defined. Contact K3 affects adjustable limit values.
Sensor: Pt100
Range: -99...750◦C
Front size: 48mm x 48mm
Panel cut-out: 45.2mm x 45.2mm
Connector: plug and socket
1

2

SOFTWARE .04
Adjustment options
Key UP
Pressing this key you can increase the parameter or parameter value or scroll the
parameter list.
Key DOWN
Pressing this key you can decrease the parameter or parameter value or scroll the
parameter list. At alarm the buzzer function can be switched off with this key.
Function key 1
Different functions are assigned to this key by help of parameters.
Key SET
Holding this key, the desired value is indicated.
Additionally, this key is used for setting parameters.
First control level:
Parameter setting of the main setpoint
If none of the keys is pressed, the display indicates the actual value of the temperature. Pressing
the SET key, the setpoint (difference value) shows on the display.
If the setpoint is to be changed, the SET key is to be kept pressed while adjusting the setpoint with
the keys UP and DOWN.
Please note that the setpoint can only be changed within the set setpoint limits.
The setpoint S1’ (if available) can be adjusted in the same way. If setpoint S1’ is activated it is
indicated and relevant for the control in case of closed switching input.
Para-
meter Function description Adjustment range Standard setting Custom setting
S1
Setpoint 1, difference value P4 ... P5 0.0°C
S1’ Sollwert 1’, difference value or
freely adjustable setpoint -99.0 ... +99.0 K (if A33=1) -99 ... 999°C (if A33=2) 0.0°C/K

Second control level (P parameters):
Setting of control parameters
Simultaneously pressing the UP and DOWN key for at least 4 seconds opens a parameter list
containing control parameters. With the UP and DOWN keys the list can be scrolled in both
directions. Pressing the SET key will give you the value of the respective parameter. Pressing also
the UP or DOWN key at the same time the value can be adjusted.
Return to the initial position takes place automatically, if no key is pressed for 60 seconds.
Para-
meter Function description Adjustment range Standard setting Custom setting
P1 Setpoint 2 or
Delta W -99 ... 999°C -99 ... 99.9 K +10.0 K
P2 Hysteresis contact K1 0.1 ... 99.9 K 1.0 K
P3 Hysteresis contact K2 0.1 ... 99.9 K 1.0 K
P4 Control range limitation –
minimum difference value -99°C ... P5 -99°C
P5 Control range limitation –
maximum difference value P4 ... 99,9°C 99,9°C
P7 Proportional band 0.1 ... 99.9 K 15.0 K
P8 Reset time Tn, I-factor 0...999 sec.
(0 sec. = inactive) 500 sec.
P9 Lead time Tv, D-factor 0...999 sec.
(0 sec. = inactive) 50 sec.
P10 Cycle time 2...100 sec. 8 sec.
P19 Key-lock 0: no key-lock
1: key-lock 0
P20 Following value display ----- -----
P21 Following value correction -10.0 ... 10.0 K 0.0 K
P22 Leading value display ----- -----
P23 Leading value correction -10.0 ... 10.0 K 0.0 K
P30 Lower limit value of the following
value for alarm contact -99°C/K...P31 -10 K
P31 Upper limit value of the following
value for alarm contact P30...999°C/K +10.0 K
P32 Hysteresis alarm contact 0.1 ... 99.9 K 1.0 K
P33 Lower range limitation for fixed
setpoint control -99 ... 999°C -99°C
P34 Upper range limitation for fixed
setpoint control -99 ... 999°C 999°C
P40 Analogue output 0: PID-control value (P43-P45)
1: following value (P41, P42)
2: leading value (P41, P42)
0
P41 Indication value for 0V at
analogue output -99...999°C 0°C
P42 Indication value for 10V at
analogue output -99...999°C 100°C
P43 Indication value full heating
performance (100%) -10.0 ... +10.0 V +10.0 V
P44 Indication value "0" performance -10.0 ... +10.0 V 0.0 V
P45 Indication value full cooling
performance (100%) -10.0 ... +10.0 V 0.0 V

Para-
meter Function description Adjustment range Standard setting Custom setting
P46 Lower limit of the following value
for 0 or 10V at analogue output -99...999°C 0,0°C
P47 Output voltage for values lower
than P46 0: 0V 1: 10V 0
P48 Upper limit of the following value
for 0 or 10V at analogue output -99...999°C 10,0°C
P49 Output voltage for values higher
than P48 0: 0V 1: 10V 1
P50 Hysteresis at limit values P46 and
P48 0,1...99,9K 1,0K
Pr Program version --

Parameter description:
P1: Setpoint / DeltaW for control circuit 2
Adjusting the setpoint of control circuit 2.
If A5=1, the setpoints for control circuit 1 and 2 are linked with one another via switching difference
DeltaW, which can be adjusted with P1. (operation with DeltaW)
The following applies: setpoint thermostat 2 = setpoint control circuit 1 + delta W2.
This difference can take positive or negative values. Thus, a leading or following contact can be
realised.
P2: Hysteresis contact K1
P3: Hysteresis contact K2
The hysteresis can be set symmetrically or one-sided at the setpoint (see A40, A41).
At one-sided setting, the hysteresis works downward with heating contact and upward with cooling
contact. At symmetrical hysteresis, half of the hysteresis’ value is effective below and half of the
value above the switching point (see fig. 1 and 2).
Fig. 1: Heating controller, Fig. 2: Cooling controller,
one-sided hysteresis symmetrical hysteresis
The hysteresis is only effective with thermostatic control, if PID mode is activated the hysteresis
becomes ineffective.
P4: Control range limitation –minimum value
P5: Control range limitation –maximum value
The adjustment range of the setpoint can be limited in both directions. This is to prevent the end
user of a unit from setting inadmissible or dangerous setpoints.
Parameters P7…P10 are only available if either K1 or K2 operates in PID mode
(A6 = 1 or A7 = 1)
P7: Proportional band at PID regulation
The proportional part works in such a way that with approximation of the actual value to the
setpoint the variable is reduced linearly from +-100% to 0%.
P8: Reset time Tn, I-factor
P9: Lead time Tv, D-factor
These settings determine the intensity and effect of the I-and D-portion. If "0" is set, then the
portion is inactive.
P10: Cycle time Tp
The cycle time is the time, in which the control output runs through one switching period, i.e. once
switched out and once switched on. The smaller the cycle time, the faster the regulation. By
consequence, however, there is also an increased switching frequency of the exit, which can lead

to rapid wear of relay contacts. For very fast control ways with the respective high switching
frequency a voltage output is therefore of advantage.
P19: Key-lock
The key-lock allows blocking of the control keys. In locked condition parameter adjustments with
keys is not possible. At the attempt to adjust the parameters despite key-lock the message "==="
appears in the display.
P20: Following value display
When this parameter is selected, pressing the SET key display the actual value of the following
input. The value can be adjusted with parameter P21.
P21: Following value correction
This parameter allows the correction of actual value deviations caused for example by sensor
tolerances or extremely long sensor lines. The regulation measure value is increased or decreased
by the here adjusted value.
P22: Leading value display
When this parameter is selected, pressing the SET key display the actual value of the leading
input. The value can be adjusted with parameter P23.
P23: Leading value correction
This parameter allows the correction of actual value deviations caused for example by sensor
tolerances or extremely long sensor lines. The regulation measure value is increased or decreased
by the here adjusted value.
P30: Lower alarm value
P31: Upper alarm value
The exit alarm is a boundary alarm or a range alarm. Both at the boundary alarm and the range
alarm, limit values can be relative, i.e. going along with the setpoint S1/S1’, or absolute, i.e.
independent of the setpoint S1/S1’. Note that in case of differential control the main setpoint
always is formed by the addition of the actual leading value and the adjusted difference value S1. If
setpoint S1’ is activated the new difference value is either S1+S1’ or only S1, depending on
parameter A35.
If only one switching point is required in case of boundary alarm, the not-used second switching
point should be adjusted to a value above or below the control range and the limit values should be
absolute (see parameter A30).
Boundary alarm function (see fig. 3):
The alarm contact is closed if the process
temperature is above the upper or below the
lower boundary value.
Fig. 3: Boundary alarm, rel. boundaries
Range alarm function (see fig. 4):
Opposite switching behaviour to the boundary
value alarm. The alarm contact is closed if
the actual value remains between the
boundary values.
Fig 4: Range alarm, abs. boundaries

P32 Hysteresis alarm contact
The hysteresis can be set symmetrically or one-sided at the adjusted limit values. (see A42). It
becomes effective depending on alarm definition. At one-sided setting and boundary alarm the
hysteresis is effective above the lower and below the upper limit value. At one-sided setting and
range alarm the hysteresis is effective above the upper and below the lower limit value. At
symmetrical hysteresis, half of the hysteresis’ value is effective below and half of the value above
the switching point.
P33: Lower range limitation for fixed setpoint control on following sensor
P34: Upper range limitation for fixed setpoint control on following sensor
P33 and P34 are the limit values for the main setpoint, formed by reference variable and the given
offset temperature. If the main setpoint is above the upper or below the lower limit value the value
of P33 or P34 becomes effective as new setpoint and the leading value has no more effect on the
setpoint. When the temperature range between P33 and P34 is reached again the control returns
to the main setpoint as before.
P40: Analogue output
This is to define whether the analogue output carries reference variable, the actual following value
or the actual leading value. In case of reference variable display, the sign can change, depending
on whether heating or cooling is required. The actual values, however, are always indicated with
positive sign.
P41: Indication value for 0V at analogue output
P42: Indication value for 10V at analogue output
Indication of the actual value is subject to the following range adjustment:
If temperature reaches the value set in P41, voltage is 0 V.
If temperature reaches the value set in P42, voltage is 10 V.
P43: Indication value full heating performance (100%)
P44: Indication value "0" performance
P45: Indication value full cooling performance (-100,0%)
Indication of the variable is subject to the following range adjustment:
If heating is to be performed with 100 %, voltage is as set at P43.
If neither heating nor cooling is requested, voltage is as set at P44.
If cooling is to be performed with 100 %, voltage is as set at P45.
On the following page there are some scaling examples.

Scaling examples of analogue output:
Scaling example 1:
Indication range of the variable for heating
and cooling is -10.0 ... +10.0 V
with P43 = 10.0; P44 = 0.0; P45 = -10.0.
This is the standard setting.
Heating
performance
100%
0%
100%
Cooling
performance
-10 V 0 V +10 V
Analogue output
P 43
P 44
P 45
Fig. 5
Scaling example 2:
Indication range of the variable for heating is
+2.0 ... +10.0 V
with P43 = 10.0; P44 = 2.0; P45 = 2.0.
Heating
performance
Cooling
performance
100%
0%
100%
+2 V +10 V
Analogue output
P 43
P 44
P 45
Fig. 6
Scaling example 3:
Indication range of the variable for cooling is
–2.0 ... –8.0 V
with P43 = -2.0; P44 = -2.0; P45 = 8.0.
Heating
performance
Cooling
performance
100%
0%
100%
-8 V 0 V
Analogue output
P 43
P 44
P 45
Fig. 7
Notes concerning parameters P40 -P45:
If the reference variable is selected with
parameter P40, the parameters P41 and P42
are still adjustable, but without function. The
same applies to the parameters P43-P45, if
the actual value is selected with parameter
P40.

P46: Lower limit of the following value for 0 or 10V at analogue output
If the following value drops below this limit, the output voltage is according to parameter P47.
P47: Output voltage for values lower than P46
Output voltage below the limit set with parameter P46.
P48: Upper limit of the following value for 0 or 10V at analogue output
If the following value goes above this limit, the output voltage is according to parameter P49.
P49: Output voltage for values higher than P48
Output voltage above the limit set with parameter P48.
P50: Hysteresis at the limit values P46 and P48
The here adjusted hysteresis is set symmetrically at the setpoints according to parameters P46
and P48.
Pr
Program version