Störk-Tronic ST710-PWHVM.26 User manual

ST710-PWHVM.26

Six-stage controller

Order number 900205.004

Old Id.Nr.: 175539

Wiring diagram

Product description

The six-stage controller was developed for the control of compressor groups of up to 6 machines,

and/or the control of compressors with bypass-valves (max. 3 machines). The basic gas charac-

teristics are part of the ﬁxed program data - therefore, it is possible to execute a pressure control

(4...20mA) and to show the temperature values at the same time. The compressor running times

can be optimised by help of the sequential or time-conditioned load replacement. The controller

that can be parametered in various ways has an alarm contact and a hour meter.

Front size: 84mm x 42mm

Panel cut-out: 67.5mm x 31.5mm

Connector: plug and socket

SOFTWARE .26

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.

Key Display:

Shortly pressing this key shows the other value (“°C”, “bar”) of the actual display for 3

seconds. Pressing it for more than 5 seconds switches over to power display or back to

temperature display. The LEDs indicate the actual display value.

Key SET

While SET key is pressed, the setpoint is indicated.

In addition, the SET key is used for setting parameters.

Key Standby

This key puts the controller into standby mode. Pressing the key a second time, restarts

the unit. The key can be deactivated.

First control level:

After switching-on the mains voltage the display shows “OFF” if standby mode is activated and the

actual value if the controller is not in standby mode.

The LEDs have the following functions:

“°C” = temperature display in °C (upper LED)

“bar” = pressure display in bar (middle LED)

“%” = power display in % (lower LED).

Note: The setpoint can also be adjusted by the LON-network. On every setpoint adjustment via

LON-network the new value will be verified if in control range limitations.

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 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 E1.

Para-

meter Function description Adjustment range Standard

setting Custom

setting

S1 Setpoint P4...P5 0.0°C

S1' Setpoint S1'

(E1 closed) -99.9 ... +99.9 K or:

P17...P18 -5.0 K or

10.0°C

Note: The setpoint can also be adjusted via LON-network. On every setpoint adjustment via LON-

network the new value will be verified if in control range limitations.

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.

Important advice:

The parameters P1-P5 as well P30+P31 are saved separately as absolute und relative values in

the controller. The parameters A10-A14 resp. A17 of the third control level determine which group

of values is accessed. It s recommended to adjust these parameters of the third control level first,

otherwise performed adjustments of the respective P-parameters have to be repeated

Because a change of the display value with A15 and/or the refrigerant with A37 can cause a forced

reset of the P-parameters, these parameters (A15 and A37) should be adjusted first as well.

To delete or change the operating times P33-P34 parameter A42 must be set to “0”.

Para-

meter Function description Adjustment range Standard

setting Custom

setting

P1 Setpoint 2

Delta W1 -99.9 ... 999.0°C

-99.9 ... 99.9 K

10.0 K

P2 Setpoint 3

Delta W2 -99.9 ... 999.0°C

-99.9 ... 99.9 K

20.0 K

P3 Setpoint 4

Delta W3 -99.9 ... 999.0°C

-99.9 ... 99.9 K

30.0 K

P4 Setpoint 5

Delta W4 -99.9 ... 999.0°C

-99.9 ... 99.9 K

40.0 K

P5 Setpoint 6

Delta W5 -99.9 ... 999.0°C

-99.9 ... 99.9 K

500 K

P11 Hysteresis 1 for K1 0.1...99.9 K 1.0 K

P12 Hysteresis 2 for K2 0.1...99.9 K 1.0 K

P13 Hysteresis 3 for K3 0.1...99.9 K 1.0 K

P14 Hysteresis 4 for K4 0.1...99.9 K 1.0 K

P15 Hysteresis 5 for K5 0.1...99.9 K 1.0 K

P16 Hysteresis 6 for K6 0.1...99.9 K 1.0 K

P17 Control range limitation –

minimum setpoint -99.9°C...P18 -99.9°C

P18 Control range limitation –

maximum setpoint P17...999.0°C 999.0°C

P19 Key-lock 0: no key-lock

1: key-lock 0

P20 Indication actual value 1 N/A

P21 Actual value correction -30.0...+30.0 K 0.0 K

P30 Lower alarm value -99.9°C...P31 or

-99.9...999.0 K -99,9°C or

-10,0 K

P31 Upper alarm value P30...999.0°C or

-99.9...999.0 K 999,0°C or

+10,0 K

P32 Alarm hysteresis 0.1...99.9 K 1.0 K

Para-

meter Function description Adjustment range Standard

setting Custom

setting

P33 Total operating time contact K1