ELREHA MSR 100 Series User manual

ELEKTRONISCHE REGELUNGEN GMBH
Technical Manual
Stage Controller for Compressors &
Condenser Fans
MSR x100
Software Version 020710
MSR 1100
MSR 3100
MSR 3100 ST
MSR 5100
MSR 19100
MSR 23100
MSR 25100
MSR 29100
Nr. 5311032-05/05 E
lStage Controller for
Compressor Compounds, Brine-Chillers and Condenser Fans
lUp to 4 Stages
lFor Single- and Multi-Stage Compressors
lInputs for 2-wire Pressure Transmitters, Pressostat and
Temperature Sensors
lAutomatic Base-Load Change (Stage Sequence Change)
lAutoadaptive Trend Recognition
lAnalogue Output 0-10V DC for Motordrives or Remote Displays
l2nd Setpoint by internal clock
lPeak Load Limitation / Fast Backrun / Emergency Operation
lAlarm Limitations
lCompressor Idle Time
lIntegrated operation time counters
lRS-485-Interface
Please note
Safety
Instructions !
By replacing older
types
(x106, x206, x300):
Controllers must be
configured while
start up !
NEW

Page 2 Technical Manual MSR Universal Stage Controller
Technical Data
Supply Voltage ................... see type survey
Power Consumption ........... appr. 3,5 VA
Output Relays ..................... 4x potential free
Contact Rating.................... 8A cos phi=1, 3A ind. / 250V AC
Operating-/Storage-
temperature ........................ -10...+55°C / -30...+70°C
Ambient Humidity ............... max. 85% r.H., not condensing
Signal Inputs....................... 4...20mA, Pressostat,
2x TF 201 / TF 501, selectable
Supply Voltage for
2-wire pressure transm. ..... appr. 24 VDC unreg., 23mA max
MSR 1100 ......... appr. 12 VDC reg., 21mA max.
Display ................................ LED7-segm.,red,char.height13mm
19"-module: char. height 10mm
Resolution........................... 0,1
Control-/Display Range...... see parameter listing
Data storage parameters ... typ. 10 years
Real Time Clock ................. clock backup appr. 10 days
Indicator LED's ................... 3 mm, red
Control Inputs (Optocpl.).... like mains voltage, 3mA max.
(MSR 1100: potential free contact)
Analogue Output ................. 0-10 V DC, max. 3 mA
Resolution Analogue Outp. . 8 bit between limit parameters
Data Interface ..................... E-Link (RS-485)
Electrical Connection ......... Screw terminals 2,5mm
19"-module:DIN41612"F"-connector
Housing, Protection
MSR 1100 ............... 77 x 35 mm, IP 54 from front
MSR 3100/23100 .... DIN-rail housing, IP 30
MSR 5100/25100 .... 96 x 48 mm, IP 54 from front
MSR 19100/29100 .. 19", 8 TE
Further informations you will find on the parameter listing.
Type Overview
MSR 1100 ........... panel mounting, 12-24V AC/DC
MSR 3100 ........... for 35mm DIN-rail 230V~, 50-60 Hz
MSR 3100 ST...... like above, but pluggable terminals
MSR 5100 ........... panel mounting, 230V~, 50-60 Hz
MSR 19100 ......... 19"-module, 8TE, 230V~, 50-60 Hz
MSR 23100 ......... for 35mm DIN-rail 110V~, 60 Hz
MSR 25100 ......... panel mounting, 110V~, 60 Hz
MSR 29100 ......... 19"-module, 8TE, 110V~, 60 Hz
Accessories (please order separately)
For usage with compressor compounds
• 2-wire pressure transmitter type DG 0/10 GSW with 4-20mA
output signal
For usage with condernser fans
• 2-wire pressure transmitter type DG 0/25 GSW with 4-20mA
output signal
For usage with brine-chillers
• 2 x temperature sensor TF 201 (PTC) or TF 501 (Pt 1000)
For MSR 1100 only:
- Transformer 107-1300-0052 (220/12V / 5VA) or similar
For 19"-module:
- 19"-subrack or panel housing
Contents
Page
Operating / Operating Elements .......................................3
Authorized Manipulating / Unlock Keys ............................3
Mode-(status) Display .......................................................3
Parameter Listing ..............................................................4-5
Functional Description ......................................................6
Trend Analysis...................................................................8
Installation .........................................................................9
Start Up..............................................................................10
Physical Dimensions / Connections .................................11
Manufacturer:
25109 Terminal Drive South St. Petersburg, Florida 33712
phone [phone] e-mail: [email protected]
Elektronische
Regelungen GmbH
D-68766 Hockenheim, Germany Schwetzinger Str. 103
Telefon (+49) (0) 62 05 / 2009-0 internetwww.elreha.de
e-mail [email protected]
Controls
Safety Instructions
Please read before Start-up
• Electrical Installation and Start Up must be done from
authorized personnel.
• This product may only be used for the purposes listed on
page 1.
• Please note the local safety instructions !
• Before using the controller, please check if the unit fits
the application.
• Before applying voltage to the controller:
Make sure that all wiring has been made in accordance with
the wiring diagram in this manual.
Check, if the supply voltage corresponds to the value printed
on the unit's type label.
• Please pay attention to the specified Temperature-/Humidity
Limits. Outside these limits malfunctions may occur.
•Never operate unit without housing.
•Please note maximum load of relay contacts
(see technical data).
•Important ! Please note the starting-currents and current
timing of the load.

Technical Manual MSR Universal Stage Controller Page 3
All MSR-versions are marked in the same way
Unlock Keys
Topreventun-authorizedpersonsfromeditingparametervalues,there
is a locking function which allows only the most important parameters
to be changed at any time. All other parameters must be unlocked
beforehand. This means that at parameter P48 a certain value is to be
set (see parameter listing) :
Press key "P"............. parameter number appears
Use "ñ/ò" ................. select code parameter (P48)
Press "P" again ......... parameter value appears
Use "ñ" ..................... set value to 88 or 70 (see parameters)
Press "P" again ......... value is stored, back to parameter no.
Ifnokeyishitfor about fourminutes,the access codeiscancelled and
the editing function is locked automatically.
The display switches back to parameter P01 (P03 if pressostat is
selected).
After entering access code '70' to change parameters of the
basic configuration, the unit initiates a fast backrun.
The control functions start again, if the access code will be
changed manually (e. g. to '88', to change other parameters)
or automatically after 4 minutes.
Reading the current operating mode
Press and hold "P" longer than > 3 seconds
One of this 3 values occur on the display:
106 = Mode for compressor compounds
206 = Mode for condenser fans
300 = Mode for brine chillers
Operating-Mode Display
Parameter P03 offers a quick information about the actual state
of the controller unit.
If a 'Pressostat' is selected as input source, P03 appears as
standard display.
The following informations are possible:
'Forward' Mode
Unit is in 'Neutral'-Mode,
no stage will be switched
on or off
'Backrun'-Mode
Limiter active
Setpoint 2 ('night') active
Fast Backrun
Peak Load Limit active
Minimum Idle-Time still
running
Operating
Operating Elements
Parameters
All selectable parameters hold a parameter number (e.g. P03), you
will find a listing on the next pages.
Calling up and editing
Press key 'P'............. parameter number appears
Use 'ñ/ò' .................select desired parameter
Press "P" again ........parameter value appears
Use keys 'ñ/ò' .........adjust parameter value
Press 'P' again ......... value is stored, back to parameter no.
Auto scrolling
Hold 'ñ/ò'-keys to scroll values automatically.
ELREHA
2
MSR
4
P
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TAR
3
sta
g
e 1 ON/OFF sta
g
e 3 ON/OFF
Pro
g
rammin
g
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sta
g
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res
p
. alarm
increase
values
decrease
values
sta
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flashin
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:
2nd set
p
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flashin
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:
data
transmission
minus-
indicator

Page 4 Technical Manual MSR Universal Stage Controller
Para- Oper.- Code Description Default Values Ranges Your
meter mode Val.
P01 X X X - Temperature of water inlet sensor resp. pressure value - - -
P02 X - Temperature of Limitation sensor (water outlet) - - -
P03 XXX -
Status of: forward/backward/peak load limitation
P04* X X X - Setpoint 1 (absolute, start of backrun) 0 0 0 Limited by
P08/P09
P05 X X 88 Setpoint 2 (relative to P04) 0 0 0...10.0
P06 X X 88 Setpoint 3 (relative to P05) 0 0 0...10.0
P07 X X 88 Setpoint 4 (relative to P04) 0 0 0...10.0
P08* XXX 88
Setpoint high limit ( for P04) +30.0 +30.0 +50.0 -100.0..+100.0
P09* XXX 88 Setpoint low limit (for P04) -1.0 -1.0 -50.0 -100.0...P08
P10* X X X 88 Hysteresis / Neutral Zone 2 2 2 0.5...10.0
P11 X 88 Limitation temperature.
Below this value, all stages will be -100.0 -100.0..+100.0
de-activated with their fixed backrun delay
P12 X88 Hysteresis of limitation temperature P11 2 0,2...10.0
P13* XX 88 Upper alarm limit (relative to P04) +31.0 +31.0 +100.0 -100.0..+100.0
Above this value and P15 is run down, alarm
relay (if available) will be activated
P14* XXX 88 Lower alarm limit -1.0 -1.0 -100.0 -100.0..+100.0
Below this value all stages will be switched OFF in 1 sec
steps, after P15 is run down, alarm relay will be activated.
P15* XXX 88 Alarm time delay 0 0 0 0...60 min
P16 XXX 70 Power stages of compressor resp. fan 1 1 1 1 1...4
P17 XXX 70 Power stages of compressor resp. fan 2 0 0 0 0...3
P18 XXX 70
Power stages of compressor resp. fan 3 0 0 0 0...3
P19 XXX 70 Power stages of compressor resp. fan 4 0 0 0 0...3
P20 XXX 88
Forward time delay (valid for each stage) 10 10 10 0...600 sec
P21 XXX 88 Backrun time delay (valid for each stage) 10 10 10 0...600 sec
P22 XXX 88
Minimum idle time (valid f. each stage) 0 0 0 0...20 min
P23 XXX 70 Switching mode relay K1 and relay K4 0 0 0 0=K1 act./K4 act.
1=K1 pass./K4 act.
2=K1 act./K4 pass.
3=K1 pass./K4 pass.
P24 XXX 88
Number of remaining stages after peak load limitation 2 2 2 0...4
P25 XXX 70
Base load change (Stage Sequence Change) 0 0 0 0=OFF, 1=ON
P26 XXX 88 Operating mode of control input OK 1 0 0 0 0=OFF,
1=2nd setpoint
2=Peak Load Lim.
3=Fast Backrun
P27 XXX 88
Operating mode of control input OK 2 0 0 0 0=OFF,
(Not available in MSR 1100, 3100 and 23100, 1=2nd setpoint
must be set to "0") 2=Peak Load Lim.
3=Fast Backrun
P28 XXX 70
Sensor type 4 4 1 1 = TF 201
2 = TF 501
3 = customer spec.
4 = 4...20 mA
5=Pressostat
Parameter Listing
Compressor Fans Brine-chiller Compressor Fans Brine.Chiller

Technical Manual MSR Universal Stage Controller Page 5
Parameter Listing
X= Parameters visible depending on operation mode
*= not available if a pressostat is used
Code 70 = control functions first starts if access code is reset (see 'operating')
cnbe = cannot be edited by the user
Para- Oper.- Code Description Default values Ranges Your
meter Mode Val.
P29* X X X 88 Calibration of pressure value resp. water return sensor value 0 0 0 -10.0...+10.0
P30 X 88 Calibration of Limitation Sensor 0 -10.0...+10.0
P31* X X 88 (Upper) Pressure value of transmitter at 20 mA 30.0 30.0 -1.0...+30.0
P32* X X 88 (Lower) Pressure value of transmitter at 4 mA -1.0 -1.0 -1.0...P31
P33 XXX-
Remaining time forward/backrun delay -- -
P34* XXX- Remaining time until an alarm will be activated -- -
P35* XXX88
2nd setpoint 1 ('night'-setpoint, replaces P04) 0 0 0 -100.0..+100.0
P36* XXX88 ON-time 'hours' of 2nd setpoint 1 0 0 0 0...23 h
P37* X X X 88 ON-time 'minutes' of 2nd setpoint 1 0 0 0 0... 59 min
P38* XXX88
OFF-time 'hours' of 2nd setpoint 1 0 0 0 0...23 h
P39* X X X 88 OFF-time 'minutes' of 2nd setpoint 1 0 0 0 0... 59 min
P40 X X X 88 Adress of the unit in a network 78 78 78 1...78
P41 XXX88
Data transmission speed (Baudrate) 4 4 4 1 = 1200
2 = 2400
3 = 4800
4 = 9600
5 = 19200
P42* XXX88
Upper limit value of Analogue Output 00 0 -100.0..+100.0
P43* XXX88 Lower limit value of Analogue Output 0 0 0 -100.0...P42
P44* X X X 88 Mode of Analogue Output 0 0 0 0=OFF
1=Proportional
2=Inversely Proport.
P45 XXX-
Clock time 'hours' --
P46 XXX-
Clock time 'minutes' --
P47 XXX- Clock time 'seconds' --
P48 XXX-
Access code 0 0 0 0...99
r 01 X X X cnbe
Operation time counter for relay K1 0 0 0 9999 hours -
value is the displayed value x 10
r 02 X X X cnbe Operation time counter for relay K2 0 0 0 9999 hours -
value is the displayed value x 10
r 03 X X X cnbe Operation time counter for relay K3 0 0 0 9999 hours -
value is the displayed value x 10
r 04 X X X cnbe Operation time counter for relay K4 0 0 0 9999 hours -
value is the displayed value x 10
Compressor Fans Brine-chiller Compressor Fans Brine.Chiller

Page 6 Technical Manual MSR Universal Stage Controller
cold
lim. setp.P11
controllin
g
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.
OperationMode1(compressorcompounds)
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
Iftheinputcurrentis>25 mAor<2mAtheMSR
expects a malfunction of the transmitter. All
stages will be switched ON with the selected
delay,thedisplayflashes.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
Iftheinputcurrentis>25mAor< 2mAthe MSR
expects a malfunction of the transmitter. All
stages will be switched ON with the selected
delay,thedisplayflashes.Afterthealarmdelay
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
Thedisplayflashes, 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
ofP11,aregular backrunwill beinitiatedandall
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
2ndsetpoint1willbefixedandcanbeactivatedbytheinternaltime-switchorthecontrol
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.

Technical Manual MSR Universal Stage Controller Page 7
Stage Controller + Pressure Transmitter (Compressors)
The control setpoint is preset by P04 as a pressure value.
There is no need for an access code. The hysteresis P10 is
located symmetrical around the control setpoint.
Forward (Stages on)
If the measured pressure value exceeds the setpoint (P04
plus ½ P10 (hysteresis), the forward delay P20 will be
started. After this timer is run down, a stage will be switched
ON and the timer starts again. Read at P33 if a delay time is
still running and when a stage will be switched on or off.
Neutral zone
If the actual pressure value is located within the limits set by
P10 (hysteresis, located around the setpoint), then no stage
will be activated or de-activated.
Backrun (Stages will be switched off)
If the actual pressure value falls short of P04 minus ½ P10,
the backrun delay P21 will be started. After this timer is run
down, one stage will be switched off, the timer starts again,
and so on.
Stage Controller
The control characteristic of the stages differ depending on the
operating mode and the selected sensors (P28) .
To prevent that the final user adjusts the setpoints to an inadmis-
sible value, the setpoint range can be limited by P08 and P09.
Stage Controller + Pressostat (Compressors or Fans)
The MSR gets the Forward/Backrun informations from a
Pressostat (or another potential free contact).
Functions depending on analog informations are not availa-
ble if this sensor is selected.
Forward (Stages on)
If the Pressostat is switched to 'Forward', the forward delay
P20 will be started. After this timer is run down, a stage will
be switched ON and the timer starts again. Read at P33 if a
delay time is still running and when a stage will be switched
on or off.
Neutral zone
If the contacts of the Pressostat are open (mid position), then
no stage will be activated or de-activated.
Backrun (Stages will be switched off)
If the Pressostat is switched to 'Backrun', the backrun delay
P21 will be started. After this timer is run down, one stage will
be switched off, the timer starts again, and so on.
Stage Controller for Brine-Chillers
Thecontrolsetpointispre-
set by P04 as a tempera-
ture value (this is the set-
point for stage 1 at the
same time). There is no
need for an access code.
The following stages
switch in a distance to the
previousstage (P05,P06, P07).The
hysteresis P10 is located symmetrical around the setpoints.
Forward (Stages on)
If the measured temperature value exceeds one of the
setpoints (P04 - P07) plus ½ P10 (hysteresis), the forward
delay P20 will be started. After this timer is run down, the
corresponding stage will be activated and the timer starts
again. Read at P33 if a delay time is still running and when
a stage will be switched on or off.
Neutral zone
If the actual value is located within the limits set by P10
(hysteresis, located around all setpoints), then no stage will
be activated or de-activated.
Backrun (Stages will be switched off)
If the actual temperature value falls short of a setpoint - ½
P10, the backrun delay P21 will be started. After this timer is
run down, the corresponding stage will be switched off, the
timer starts again, and so on.
setpoint
hysteresis
P10
cold
stage ON
stage OFF
warm
Stage Controller + Press. Transmitter (Condenser Fans)
Thecontrolsetpointispre-
set by P04 as a pressure
value (this is the setpoint
for stage 1 at the same
time).There isno need for
an access code. The fol-
lowing stages switch in a
distance to the previous
stage (P05, P06, P07). The hysteresis
P10 is located symmetrical around the setpoints.
Forward (Stages on)
If the measured pressure value exceeds one of the setpoints
(P04 - P07) plus ½ P10 (hysteresis), the forward delay P20
willbe started.Afterthis timerisrun down,thecorresponding
stage will be activated and the timer starts again. Read at
P33 if a delay time is still running and when a stage will be
switched on or off.
Neutral zone
If the actual pressure value is located within the limits set by
P10 (hysteresis, located around all setpoints), then no stage
will be activated or de-activated.
Backrun (Stages will be switched off)
If the actual pressure value falls short of a setpoint - ½ P10,
the backrun delay P21 will be started. After this timer is run
down, the corresponding stage will be switched off, the timer
starts again, and so on.
hysteresis
P10
setpoint
cold
sta
g
e ON
sta
g
e OFF
warm

Page 8 Technical Manual MSR Universal Stage Controller
Motor Control
The MSR-unit can control up to 4 single motors or multi-stage
machines with up to four stages.
The kind of machines and the number of stages will be fixed with
parameters P16 thru P19.
Example:
!! If stage No.4 is not selected, relay K4 works as an alarm
relay automatically !!
Automatic Base Load Change (Stage Sequence Change)
The built-in base load change function (P25 ON/OFF) regards
the relative runtimes of the single stages and cares for
approximately the same motor runtimes after a longer time.
If multistage machine types are used, only the runtime of the
leading stage (= motor on) will be considered.
Load Limitation
Via one of the both control inputs OK1/OK2 a load limitation
function can be initiated, e.g. for saving energy. P24 fixes how
many stages remain for control purposes after this function has
been started, the stages will be disabled within a few seconds.
Minimum Idle Time
Ifaloadisswitchedoffbyarelay,thisrelaycanbeswitchedonagain
not before the time set with P22 is over. P22 affects all relay stages.
Relay Switching Mode
With P23 the switching mode of relay K1 and K4 can be changed
for special purposes:
P23 = 0 K1 and K4 active ON
Standard setting
P23 = 1 K1 active OFF (relay de-activated), K4 active ON
With this setting e.g. an emergency operation
can be realized, compressor 1 will be controlled by
the N/C so it would run continuously if the MSR
fails.
P23 = 2 K1 active ON, K4 active OFF
Advisable if only 3 compressors/stages should
be controlled and you want to use relay K4 as
an active OFF alarm relay.
P23 = 3 K1 active OFF, K4 active OFF
Can be used for emergency operation & alarm
relay controlling 3 compressors or if compressor 1
and 4 should run in emergency mode.
Programming Relay outputs
Machine
P16 P17 P18 P19 K1 K2 K3 K4
4 single machines 1 1 1 1 1 1 1 1
1 multistage (4 stages) 4 0 0 0 1.1 1.2 1.3 1.4
2 dual stage machines 2 2 0 0 1.1 1.2 2.1 2.2
1 dual stage and two
single machines 2 1 1 0 1.1 1.2 2 3
Trend Analysis (STAN)
The stage controllers of the series MSR contain an autoadaptive
algorithm to recognize actual value tendencies (STAN = Switch
Tendency Analysis).
This algorithm effects an essential reduction of on/off cycles of the
machines and a noticeable increased control accuracy.
STAN works foreseeing, recognizes the trend of the actual value
and decides, based on the captured data, about the necessity of
switching on/off a machine.
A typical example of a conventional control is the following state:
Machines run, the actual value approaches itself to the setpoint,
theforewarddelayofthenextstageisstillrunning.Ifthenextstage
will switch on now, the tendency will be increased, probably the
setpoint range will be left quickly to low values. The high deviation
to low values then effects mostly that multiple or all machines
switch off and a quick rise of the pressure with essential overshoot
of the setpoint range. The plant 'oszillates'.
Thisbehaviourmust besuppressedbyincreasingthe switchdelay
times, but this makes the control slow and enables wider setpoint
deviations.
STAN avoids the effects in this example: STAN recognizes that
the actual value moves to the setpoint direction and disables that
machines or stages will switch on. If the tendency continues, the
setpoint will be reached without additional power. Oszillating or
essential decreasing of the setpoint range will be avoided safely.
STAN works complety autoadaptive, no parameters must be set.
Because of the fuzzy logic of the algorithm, disadvantageous
effects like moving setpoint deviations will be recognized, so they
cannot affect the tendency analysis.
If the MSR works as a brine/chiller controller, STAN
keeps disabled.
The single Advantages:
• Essential reduction of on/off cycles and so an increased
lifetime of components, especially of compressors.
• More accurate, more regular control with less setpoint
deviations than a "normal" stage controller. This affects
lower energy consumption and the cold production works
with a constant, high efficiency ratio.
• The existing expansion valves work more regular and so
more efficient, based upon the lower suction pressure
variations resp, condenser pressure variations.
• The average T falls. This affects a lower icing of the
evaporators, and the product quality rises because of the
lower de-humidifying (counters of meat/cheese, meat
storages).
• Thereactiontimesoftheplantmeetthedemands,because
the delay times must not be increased additionally to
damp the switching behaviour.
Essential Advantages Overview:
• Trend recognition, the direction of the actual value's move
will be recognized and the switch characteristic of the
machines will be changed.
• Intelligent detection of 'oszillating', permanent setpoint
deviations, which have no effect on the trend recognition.
• Autoadaptive, while run-up or service STAN requires no
parameters to be set.

Technical Manual MSR Universal Stage Controller Page 9
Control Inputs
The control inputs OK1/OK2 are normally connected to mains
voltage.Ifthisvoltage isinterrupted,thefunctions setwithP26 and
P27 will be initiated.
0= Control Input is de-activated
1= No voltage at the input (1100: contact open) changes to the
2nd setpoint. The internal time switch is deactivated, that
means the control input has a prior rank.
2= No voltage at the input (1100: contact open) initiates a Peak
Load Limitation. The no. of stages, which remain for control
purposes will be set by P24.
3= No voltage at the input (1100: contact open) starts a Fast
Backrun, all stages will be de-activated in 1 sec. steps.
Note: To prevent from being activated unintended, the
functions of OK1/OK2 are de-activated while
programming parameters P26/P27.
If the same function is selected for both inputs,
then OK 2 has the higher priority.
Voltage Output / Analogue Output
The MSR-Controller owns an analogue output with a 0-10 V DC-
signal.
Because this output is scalable, it can be used both to forward an
image of the actual value P01 or as proportional controller output.
P42.... fixes the actual value the analogue output delivers
10V (resp. 0V, if P44=2) DC voltage.
P43.... fixes the actual value the analogue output delivers
0V (resp. 10V, if P44=2) DC voltage.
P44.... switches the analoue output ON or OFF and fixes it if the
voltage should rise (P44=1) or fall (P44=2) if the actual
value rises.
Example for a Actual Value Forwarding:
Youwanttousearemotedisplayorsimilar,whichshows0barwith
0V input and 10 bar with 10V input.
P43 = "0", P42 = "+10", P44 must be "1".
Example for a Proportional Controller:
You want to control a three-way valve. This valve should be half
open at 5.0 bar. If the pressure falls, the valve should open, from
4 bar the valve should be full open. If the pressure rises, the valve
should be narrowed, from 6 bar it should be closed.
P43 ="4.0", P42 ="6.0", P44 ="2"
Using the MSR 1100 this function must be started by
openinganexternal,potentialfreeswitchconnectedto
terminals 18 and 19. Input OK2 is not available.
! Never connect mains voltage to these terminals !
This external contact must be suitable for 5VDC/1mA.

Page 10 Technical Manual MSR Universal Stage Controller
Real time clock
The MSR Controller contains a real time clock (without a date
function) which can be used for changing the control setpoint.
The timer has a data backup for about 10 days in case of power
failure.
ThetimeofthedayandthedatecanbesetwithparametersP45 thru
P47.
The time switch is de-activated if ON and OFF-time are identical.
Operation Time Counter
Each relay output owns an individual operation time counter. This
counter measures and totalizes the time this output was activated.
The values can be read at "r01" thru "r04".
Becausethedisplayhas3digitsonly,thestoredvalueis"
displayed
value x 10 ".
After9999hours thecounterwillbereset to"0".Aresetby theuser
is not possible.
Networking of MSR controllers
All MSR-controllers can be networked via their
built-in RS-485-interface. This network can be
controlled by a host unit.
Normally this host is a PC with a qualified software
which allows remote control of units and recording
of all parameters.
24V AC
Inportant
with one
transformer
onl
y
:
Switch off
b
y
double
pole switch !
PE
N PE
DO NDO
T
N PE
DO NDO
shieldin
g
T T
N PE
DO NDO
T
N PE
DO NDO
Because all units are connected parallel at the data
cable (party-line), every unit has its own network
address (P40) to ensure a specific communication.
The communication speed is fixed by P41 (Default
value 9600 Baud).
If multiple, networked controller units are supplied
from one transformer (MSR 1100 only), a double
pole switch must be used to switched off the single
positions.
Ifnot, the unit will besupplied by a half-wave viathe
shielding,andtheunitcontinuesworking(depending
on the secondary voltage of the transformer).
INSTALLATION
• Before applying voltage to the controller:
Make sure that all wiring has been made in
accordancewiththewiringdiagramin this manual.
Please check if the supply voltage corresponds to
the value printed on the unit's type label.
• Important for the installation of the MSR 1100:
Don'tconnect the secondary coil ofthe transformer to PE!
• Use 2-wire pressure transmitters only, 3-wire transmitters can
only be used with an external power supply.
•Important ! Please note the starting-currents and current
timing of your load to prevent damages of the relay
contacts.
• Sensor leads should be shielded cable with one end of the
shielding connected to ground. This avoids irregular
switching caused by electro-magnetic interference.
• The wire gauge of the sensor cables is not critical, if it
should be lenghtened, 0,5 sqmm are adequate.
• Mounting the controller close to power relays is
unfavourable in case of the electro-magnetic interference.
• Please note that TF-type temperature sensors are water-
proof but not pressure protected. To measure liquid media
please use dip-fittings.
• Important for the installation of the MSR 1100:
TheexternalcontactsforinitiatingtheOK-inputmustbesuitable
for 5VDC/1mA.
Attention !
Note
p
olarit
y
while
connectin
g
cables !
= sensor
common
terminal
PE
T
N PE
DO NDO
N PE
T
DO NDO
shieldin
g
N PE
T T
DO NDO
N PE
T
Connections
as short as
p
ossible !
5 cm max.
(2.0 inch)
DO NDO

Technical Manual MSR Universal Stage Controller Page 11
Start Up Examples
MSR as Compressor Compound Controller
Requirement:
4 single compressors, stage 1 configured for
emergency operation, automatic base-load
change.
Control setpoint 2 bar, neutral zone 0,5 bar.
pressure transmitter 4-20 mA, range 0-10 bar.
Night operation (2nd setpoint) within 19:00 and
7:00, 0,5 bar higher. Forward/Backrun delay 10
sec. The user want to see the actual pressure
valueonaremotedisplaywith 0-10V-input.While
a peak load limitation via OK 1, 2 stages remain
for control purposes.
Please always note the Security
Informations on page 2 !
Select Operation Mode
•Switch OFF power supply
•Push and hold key 'P', switch ON power
•Hold key 'P' until '_ _ _' appears
•Let go key 'P'
•Select '1 _ _' by key 'ñ'
(compressor compound mode)
•Push key 'P' once
•'def' appears, default values are loaded
•Actual values appear, ready for start up.
Basic Configuration
Enter Code Number '70' at P48
•P16=1 (single compressor at relay K1)
•P17=1 (single compressor at relay K2)
•P18=1 (single compressor at relay K3)
•P19=1 (single compressor at relay K4)
•P23=1 (relay K1 inverted, load at N/C)
•P25=1 (base load change ON)
•P28=4 (transmitter with 4-20 mA signal)
Enter Code Number '88' at P48
Adjustments
•P31=10.0(press. value transmitter at 20mA)
•P32=0.0 (press. value transmitter at 4 mA)
•P04=2.0 (control setpoint)
•P10=0.5 (neutral zone / hysteresis)
•P20=10 (forward delay in sec.)
•P21=10 (backrun delay in sec.)
•P24=2 (2 stages remain after peak load lim.)
•P26=2 (OK 1 configured for peak load lim.)
•P35=2.5 (2nd control setpoint)
•P36=19 (2nd setpoint ON 'hours')
•P37=00 (2nd setpoint ON 'minutes')
•P38=07 (2nd setpoint OFF 'hours')
•P39=00 (2nd setpoint OFF 'minutes')
•P42=10
(analog output delivers 10VDC at 10bar)
•P43=0
(analog output delivers 0V at 0 bar)
•P44=1 (analog output works proportional)
•P45=--(clock time 'hours')
•P46=--(clock time 'minutes')
•P47=--(clock time 'seconds')
Display correction
TheactualpressuredisplayP01canbecalibrated
by using P29.
MSR as Condenser Fan Controller
Requirement:
3 single fans, no emergency mode, automatic
base-load change.
Control at 15, 16, 17 bar, neutral zone 0,5 bar
each. Pressure transmitter 4-20 mA, range 0-25
bar. Night operation (2nd setpoint) within 20:00
and6:30,2barhigher.Forward/Backrundelay30
sec.
Please always note the Security
Informations on page 2 !
Select Operation Mode
•Switch OFF power supply
•Push and hold key 'P', switch ON power
•Hold key 'P' until '_ _ _' appears
•Let go key 'P'
•Select '2 _ _' by key 'ñ'
(condenser fan mode)
•Push key 'P' once
•'def' appears, default values are loaded
•Actual values appear, ready for start up.
Basic Configuration
Enter Code Number '70' at P48
•P16=1 (single fan at relay K1)
•P17=1 (single fan at relay K2)
•P18=1 (single fan at relay K3)
•P25=1 (base load change ON)
•P28=4 (transmitter with 4-20 mA signal)
Enter Code Number '88' at P48
Adjustments
•P31=25.0(press. value transmitter at 20mA)
•P32=0.0 (press. value transmitter at 4 mA)
•P04=15.0 (control setpoint stage 1)
•P05=1.0
(setpoint stage 2 in a distance to P04)
•P06=1.0
(setpoint stage 3 in a distance to P05)
•P10=0.5 (neutral zone / hysteresis)
•P20=20 (forward delay in sec.)
•P21=20 (backrun delay in sec.)
•P23=0 (no emergency mode)
•P35=17.0 (2nd control setpoint 1)
•P36=20 (2nd setpoint ON 'hours')
•P37=00 (2nd setpoint ON 'minutes')
•P38=06 (2nd setpoint OFF 'hours')
•P39=30 (2nd setpoint OFF 'minutes')
•P45=--(clock time 'hours')
•P46=--(clock time 'minutes')
•P47=--(clock time 'seconds')
Display correction
TheactualpressuredisplayP01canbecalibrated
by using P29.
MSR as Brine-Chiller Controller
Requirement:
2 dual-stage compressors, no emergency mode,
automatic base load change.
Control at 4, 6, 8, 10 °C, hysteresis 0,5 K each.
Temperature sensor TF 501, night operation
(2nd setpoint) within 20:30 and 6:00, 2 K higher.
Forward/Backrun delay 25 sec.
Please always note the Security
Informations on page 2 !
Select Operation Mode
•Switch OFF power supply
•Push and hold key 'P', switch ON power
•Hold key 'P' until '_ _ _' appears
•Let go key 'P'
•Select '3 _ _' by key 'ñ'
(Brine-Chillers)
•Push key 'P' once
•'def' appears, default values are loaded
•Actual values appear, ready for start up.
Basic Configuration
Enter Code Number '70' at P48
•P16=2 (compressor 1 ON, relay K1)
(compr. 1 power stage ON, relay K2)
•P17=2 (compressor 2 ON, relay K3)
(compr. 2 power stage ON, relay K4)
•P25=1 (base load change ON)
•P28=2 (temperature sensor TF 501)
Enter Code Number '88' at P48
Adjustments
•P04=4.0 (control setpoint stage 1)
•P05=2.0
(setpoint stage 2 in a distance to P04)
•P06=2.0
(setpoint stage 3 in a distance to P05)
•P07=2.0
(setpoint stage 4 in a distance to P06)
•P10=0.5 (neutral zone / hysteresis)
•P20=25 (forward delay in sec.)
•P21=25 (backrun delay in sec.)
•P23=0 (no emergency mode)
•P35=6.0 (2nd control setpoint 1)
•P36=20 (2nd setpoint ON 'hours')
•P37=30 (2nd setpoint ON 'minutes')
•P38=06 (2nd setpoint OFF 'hours')
•P39=00 (2nd setpoint OFF 'minutes')
•P45=--(clock time 'hours')
•P46=--(clock time 'minutes')
•P47=--(clock time 'seconds')
Display correction
The 2 actual temperature displays can be
calibrated by P29 ( P01, inlet temperature) and
P30 (P02, outlet temperature).

Page 12 Technical Manual MSR Universal Stage Controller
Dimensions MSR 1100
Connection MSR 1100 (simplified pictures)
ELREHA
76
(
3.0
)
MSR
123
35 (1.38)
P
4
28 (1.1)
19
6
M
PE
N
MM
12 543
L
0..10V
23
K1
24
K2 K3
DO
NDO
22 2021
M
10978 12 11
230/24V,
5 VA
OK1
MSR 1100
15
K4
1618 17 13
12-24V
AC/DC
14
outlet sensor F2
inlet sensor F1
MSR 1100 with 2 temperature sensors for controlling a brine-
chiller.
MSR 1100 with 2-wire pressure transmitter.
MSR 1100 with Pressostat
6
19
M
PE
N
MM
21 435
L
0..10V
23
K1
24
K2 K3
DO
NDO
21
22 20
M
107981112
230/24V,
5 VA
OK 1
15
K4
18 1617 13
AC/DC
12-24V
14
forward
backrun
Pressostat
rear view with mountin
g
frame
75 (2.95)
912345 76 8
202122 19 18 16172324
37 (1.46)
1110 12
1415 13
10
Multi-Channel Controller
F2
Mehrstufenregler
ELREHA
15
AC/DC
12-24V
13
12
11
14
F1
4..20mA
+12V DC
NDO
DO
0..10V
1
24
3
22
70 (2.76)
9
16
78
K4
456
K2 K3
17
18
21 20 19
K1
2
23
OK 1
56 (2.2)12
(.47) 3 (.12)
M
6
19
42135
N
PE
MM
L
0..10V
+12VDC
23
K1
24
K2 K3
NDO
21
22 20
DO
7119810
12
230/24V,
5 VA
M
DG x/xx GSW
MSR 1100
OK1
4..20mA
15
K4
18 1617
AC/DC
12-24V
1314
12-24V
70 (2.76)
10
AC/DC
12
11
89
7
6
145
3
2
12
(.47)
19
K3
Multi-Channel Controller
Mehrstufenregler
ELREHA
15
F1
13
14
F2
4..20mA
OK 1
K4
17 16
18
0..10V
24
+12V DC
22
K2
NDO
DO
21 20
23
K1
56 (2.2) 3 (.12)
From september 2001 the units will be produced
with the follwing, changed pinout:

Technical Manual MSR Universal Stage Controller Page 13
Transmitter Connection MSR 3100 / 23100 (simplified picture)
10
relay K2
PE
N
MM
1913 18
OK 1
NNL
86 711 9
relay K1
L
AC
L
2428
0-10V DC 24V DC
DC
32
31
MM
relay K4
(resp. alarm)
151214 13 17
relay K3
16
30
NDO
MSR 3100
4-20 mA IN
RS
485
34
DO
29
DG x/xx
11
relay K2
PE
N
M
1319
N
18
N
68 7
L
L
0-10V DC
OK 1
L
relay K1
2431 3832
MMM
1214910 13 17 15 16
MSR 3100
relay K3
inlet-
(control)
sensor
ourlet-
sensor
relay K4
(resp.alarm)
RS
485
NDO
DO
37 36 35 3029
Temperature Sensor Connection MSR 3100 / 23100
(for chillers, simplified picture)
36
MSR 3100
3837
RS
485
29
DO
NDO
30
backrun
forward
Pressostat
Dimensions MSR 3100 / 23100 / 3100 ST
Pressostat
Connection
MSR 3100 /
23100
35(1.38)
59 (2.32)
26 (1.02)
39 (1.54)
46 (1.81)
1012345 76 89
2
MSR
1
P
1211
ELREHA
13 14 15 16 17 18 19
4
3
105 (4.13)
29232220 21 25 26 2824 27 3130 32 34 35 36 3833 37
63 (2.48)
91 (3.58)
105 (4.13)
46 (1.81)
2 4
1 2 10345 76 89 11 1312 14 15 16 17 18 19
ELREHA
20 21 292322 25 26 2824 27 30 3231 34 3533 36 3837
P
MSR
13
63 (2.48)
91 (3.58)
114 (4.49)
59 (2.32)
39 (1.54)
35(1.38)
26 (1.02)
MSR 3100 ST
MSR 3100 ST
valuesinbrackets
= inches

Page 14 Technical Manual MSR Universal Stage Controller
13
MSR
2
ELREHA
P
4
Dimensions MSR 5100 / 25100
MSR 5100/25100 with Pressostat (simplified picture)
N
119
(
4.69
)
89 (3.5)
7
rela
y
K2
12 15
14
13
10 11
9
8
OK 1
rela
y
K4
(
alarm
)
OK 2
rela
y
K3
6
5
24
3
1
rela
y
K1
mains
PE
22
GND
97 (3.81)
485 NDO
+24V DC f.
transmitter
30
29
28
25 26
24
23
GND
485 DO
0-10V= OUT
4-20 mA IN
inlet-
sensor
21
20
17 18 19
outlet-
sensor
16
FWD
BR
8
MSR 5100/25100 with 2-wire transmitter.
(simplified picture)
RS
485
24
PE
mains
relay K1
relay K2
N
PE
MM
123456 87
L
1816 17
+4-20 mA
+0-10V
2019 21 23
NDO
22
inlet sensor
outlet sensor
relay K3
relay K4
(alarm)
M M
14910 1211 13 15
29
N
+24VDCf.
transmitter
OK 1
DO
2625 28
OK 2
30
MSR 5100/25100 with temperature sensors (simplified pic.)
1213 14 15
23
2425
4567891011
2627 2829 30
1
1617 1819 2021 2223
1
30
NDO
23
M
DG x/xx
PE
N
M
21 3 4 567
L
17
mains
PE
16
relay K1
relay K2
18 20
+4-20 mA
19
+0-10V
2221
M M
138910 1211 1514
28
relay K4
(alarm)
RS
485
+24VDCf.
transmitter
relay K3
DO
24 2625
OK1
OK2
N
29 30
8
NDO
23
M
Pressostat
PE
N
M
1 2 43 567
L
mains
PE
16 17
relay K1
relay K2
20
+4-20 mA
18 19
+0-10V
2221
Backrun
Forward
M M
13910 1211 1514
OK1
28
RS
485
+24VDCf.
transmitter
relay K3
relay K4
(alarm)
DO
24 2625
OK2
N
29 30
valuesinbrackets
= inches
45 (1.77)
49 (1.93)
Panel housing acc. to DIN 43700 / IEC 61554
cut-out: 92 x 45 mm (w x h)
tolerances max: +0,8 (w), +0,6 (h)

Technical Manual MSR Universal Stage Controller Page 15
129
ELREHA
P
40,3 (8TE)
1243
MSR
2,5 162,5
Dimensions MSR 19100 / 29100 Connection
Pressostat-
connection
• Wiring diagram shows a
connector equal to DIN 41612,
type 'F', rear view.
rela
y
1
rela
y
2
+18VDC
0-10V DC
16
backrun
Pressostat
forward
26
32
28
30
22
24
20
18
6
12
14
8
10
2
L
4
d
16
rela
y
3
20
32
30
26
28
24
22
18
F1
DO
NDO
RS-
485
rela
y
4
(
alarm
)
F2
4/20mA
14
10
12
z
6
OK1
OK2
8
2
N
4
4/20mA
N
16
relay 3
28
32
30
26
24
22
20
18
F1
+18VDC
RS-
485
NDO
DO
0-10V DC
relay 4
(alarm)
F2
10
14
12
6
8
2
4
d
relay 2
relay 1
OK2
L
OK1
16
26
32
28
30
22
24
20
18
+ Supply
Signal
DG x/xx
6
12
14
8
10
2
4
z
RS-
485
16
inlet -
sensor
26
30
32
28
+18VDC
F1
20
24
22
18
0-10V DC
6
relay 1
relay 2
10
14
12
8
2
4
d
L
16
outlet-
sensor
26
F2
DO
NDO
30
32
28
4/20mA
relay 4
(alarm)
relay 3
20
24
22
18
6
OK1
OK2
10
14
12
8
N
2
4
z
2-wire
pressure
transmitter
Temperature-
sensor
connection

Page 16 Technical Manual MSR Universal Stage Controller
EG-Statement of Conformity
set up 6.9.04 checked: 6.9.04 approved: 6.9.04
by: tkd/jr by: ek/al by: mv/mh
*The conformity with IEC 1000-4-3 is derived from the IEC 1000-4-2 and IEC 1000-4-4 test results. The correlation with IEC 1000-4-3 is based on test results which
are located on site at the manufacturer.
We state the following: When operated in accordance with the technical manual, the criteria have been met that are outlined in the
guidelines of the council for alignment of statutory orders of the member states on electro-magnetic consistency ( 89/336/EWG ). This declaration
is valid for those products covered by the technical manual which itself is part of the declaration. Following standards were consulted for the
confirmity testing with regard to electromagnetic consistency :
IEC 1000-4-1, IEC 1000-4-2, IEC 1000-4-3*, IEC 1000-4-4, IEC 1000-4-5, EN 55011 B, EN 50081, part 1 and 2;
EN 50082, part 1 and 2, EN 61010 part 1, EN 61010-1/A2 part 1/A1
This statement is made from the manufacturer / importer by:
ELREHA Elektronische Regelungen GmbH Klaus Birkner, Developement and
68766 Hockenheim and leader of the EMC-Laboratory
(Name / Anschrift / name / adress )
Hockenheim 31.5.1999 .............................................
Ort/ city Datum/ date Unterschrift/ sign
This manual, which is part of the product, has been set up with care and our best knowledge, but mistakes are still possible.
If you have any problems, difficulties or questions please don't hesitate asking our technical support.
Technical details can be changed without notice, especially the software. Please note that the described functions are only valid
for units containing the software with the version-number shown on page 1.
Units with an other software number can work a little bit different. You will find this software number on the label of the unit too.