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Technical Manual MSR Universal Stage Controller
cold
lim. setp.P11
controlling
limitation
starts
warm
hysteresis P12
Functional Description
Selection of Operating Mode
The MSR can be configured for controlling compressor com-
pounds, for condenser fans and brine chiller systems.
While this configuration, all adjusted parameters will be erased
and replaced by suggestive default values.
Not necessary parameters will be suppressed.
•
Switch power OFF
•
Press and hold key 'P', switch on power
•
Hold key 'P' until '_ _ _' appears
•
Let go key 'P'
•
Select desired mode by key '
ñ
'
"1 _ _" = for compressors (input signal = pressure)
"2 _ _" = for condenser fans (input signal = pressure)
"3 _ _" = for brine-chillers (input signal = temperature)
•
Press key 'P' once
•
Display shows 'def', default values are loaded
•
The actual value appears, ready for start up.
Operation Mode 1 (compressor compounds)
Input signals of the controller
The input signal comes from a 2-wire pressure
transmitter with a 4-20 mA-signal or a presso-
stat, selectable by parameter P28.
Actual - and Status Display
P01 shows the pressure value of the transmit-
ter. If the controller was configured for working
with a pressostat, P03 becomes the standard
display.
P03 is a status display, which shows states like
Foreward/Backrun, Neutral State and others
(see 'Operating'). From every state of the con-
troller, 4 minutes after the last keypress the
display switches back to the actual value.
Calibration of Transmitter and Actual Value
A pressure transmitter delivers its measured
value by a 4-20 mA-signal. With P31/P32 you
select the pressure values which are shown
and processed with 4 or 20 mA input current.
With P29 the actual value display (P01) can be
adjusted.
Sensor Failures
If the input current is >25 mA or < 2 mA the MSR
expects a malfunction of the transmitter. All
stages will be switched ON with the selected
delay, the display flashes. After the alarm delay
is run down (P15) the alarm relay (K4) switches
if available.
Limit values
If the pressure value falls short of the limitation
value P14, all running stages will be de-activa-
ted in 1 second steps. After the alarm delay
P15 is run down, the alarm relay (K4) switches
if available.
Operation Mode 2 (condenser fans)
Input signals of the controller
The input signal comes from a 2-wire pressure
transmitter with a 4-20 mA-signal or a presso-
stat, selectable by parameter P28.
Actual - and Status Display
P01 shows the pressure value of the transmit-
ter. If the controller was configured for working
with a pressostat, P03 becomes the standard
display.
P03 is a status display, which shows states like
Foreward/Backrun, Neutral State and others
(see 'Operating'). From every state of the con-
troller, 4 minutes after the last keypress the
display switches back to the actual value.
Calibration of Transmitter and Actual Value
A pressure transmitter delivers its measured
value by a 4-20 mA-signal. With P31/P32 you
select the pressure values which are shown
and processed with 4 or 20 mA input current.
With P29 the actual value display (P01) can be
adjusted.
Sensor Failures
If the input current is >25 mA or < 2 mA the MSR
expects a malfunction of the transmitter. All
stages will be switched ON with the selected
delay, the display flashes. After the alarm delay
is run down (P15) the alarm relay (K4) switches
if available.
Limit values
If the pressure value exceeds the limitation
value P13, then, after the alarm delay P15 is
run down, the alarm relay (K4) switches if
available.
Operation Mode 3 (Brine-Chillers)
Input signals of the controller
2 Temperature Sensors TF 201 (PTC) or TF
501 (Pt1000). The control sensor should be
mounted at water reflux (brine backflow, chiller
inlet). The second sensor measures the tem-
perature limitation value at chiller's outlet. Sel-
ect sensors by P28.
Actual - and Status Display
P01 shows the inlet temperature, P02 shows
the outlet temperature.
P03 is a status display, which shows states like
Foreward/Backrun, Neutral State and others
(see 'Operating'). From every state of the con-
troller, 4 minutes after the last keypress the
display switches back to the actual value.
Calibration of Sensors and Actual Value
Correct the temperature displays by parame-
ters P29 and P30.
Sensor Failures
The display flashes, if a sensor has short circuit
or is broken or a temperature exceeds the
display range. All stages will be switched off
with their backrun delay. After the alarm delay
is run down (P15) the alarm relay (K4) switches
if available.
Limit Values
Temperature Limitation
If the outlet temperature at sensor 2 falls short
of P11, a regular backrun will be initiated and all
stages will switch off after their delay (P21).
P12 is the hysteresis value for P11.
Frost Protection
If the inlet temperature falls short of P14,
stages will be switched off in 1 second steps.
After the alarm delay P15 is run down, the
alarm relay (K4) switches if available.
Temperature Alarm
If the inlet temperature exceeds P13, the alarm
relay (K4) switches after the alarm delay P15 is
run down.
All Operating Modes
P34 always show the remaining time of the alarm delay.
2nd Control Setpoint 1 / 'night'-shift
Sometimes it is desired to shift the setpoints e.g. to spare energy at night. With P35 a
2nd setpoint 1 will be fixed and can be activated by the internal time-switch or the control
inputs OK1/OK2.
Within the times set by P36 thru P39 the second setpoint is active. If not necessary, the
times can be set to "0". Please note that initation by OK-input has more priority as the
internal clock.
