microSYST SR 03 User manual

COMPETENCE IN
MEASUREMENT
SOLAR AND HEATING SYSTEMS
TEMPERATURE CONTROLLER
SR 03
TECHNICAL DESCRIPTION AND USER MANUAL
PLOVDIV 2020
Document edition 2020-04-22

1. TECHNICAL DATA
Range / accuracy - 20  200 ° / ± 0.5 °
Ana og inputs 3
RTD Sensors РТ 1000
Re ay outputs 2
K1 – Electric heater Relay 250 V / 5 А
K2 – Pump Relay 250 V / 5 А
Options Triac 250 V/ 2A ; OC за TTL or
SSR 250 V / 10, 20, 40 A
Indication and Keyboard
Display 2 x 8 LCD
Keyboard Semisensor
Power supp y 230 V AC/50 Hz (± 1 Hz)
Environmenta Conditions
Operating conditions: 0 ÷ 60 °C / 0 ÷ 80 % rh
Storage conditions : -10 ÷ 75 °C / 0 ÷ 90 % rh
Dimensions
Overall dimensions (WxHxL)
Wall Mounting Housing 125 х 85 х 58 mm
DIN-rail M36 70x86x57
Box Material:
Wall Mounting Housing MS C4, Plastic
DIN-rail M36 Noryl VO1550–black base
Lexan 940 – gray upper
Weight max 450 g
Leve of protection:
Wall Mounting Housing IP65
DIN-rail M36 IP20
SR 03 is designed to solar systems control and boiler temperature control by monitoring
of three temperature channels. It controls two relay outputs (for circulation pump and heater)
depending of differences in temperature at measuring points.
The heater is controlled by temperature set point independently of the pump mode.
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2. FRONT PANEL
Figure 1 : Front panel of device in M36 DIN rail housing
Figure 2: Front panel of device in wall mount housing
3. TERMINALS AND CONNECTIONS
Figure 3 Connection of device in wall mount housing.
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Pt 1000 Input
Ts Tb To
~220V Fuse
K1
K2
Solar Regler
AUTO
HAND
MODE
AUS
SR 03
O FF
AUTO
ON
SR03
Sol ar controller
Set
M ode

Figure 4 Connection of device in M36 DIN rail housing
* The output current should not exceed the specified current. If necessary, use external
relays.
4. SHORT DESCRIPTION
SR 03 is designed to solar systems control and boiler temperature control by monitoring
of three temperature channels. It controls two relay outputs (for circulation pump and heater)
depending of differences in temperature at measuring points.
The heater is controlled by temperature set point independently of the pump mode.
Tb
To
Ts
Pump
Heater
Tb - temperature sensor is placed on the
top part of the boiler (Channel 1)
Ts - temperature sensor on collector field
(Channel 2)
To - temperature sensor is placed on the
bottom part of the boiler (Channel 3)
Figure 5. Solar panel heating system and electric heater
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NL
K2 - Pump K1 - Heat
~220V
GND GND GND
Tb
Ts To
PT1000
~220V
Fuse
~220V
input
NC NC NC NC NC NC
NC NC NC

5. MAIN MENU
TX= XXX C
Pump Off
“TX” - indicate current selected temperature channel. To select
another channel, operator must use UP and DOWN button
( default value that is displayed after power-up is Tb)
“XXX” - temperature value in degree.
“Pumpe Aus” or “PumpeEin” - display state of pump
The status of the heater is not indicated.
SR03 has four buttons UP,DOWN,MODE and SET .UP and DOWN are of general
purpose. SET button is use for parameters adjustment. MODE is use for modes switch. The
three modes are as follows :
- AUTO – automatic pump control
- ON – absolutely pump switch on
- OFF – absolutely pump switch off
Pump control rules by priority in AUTO mode
Condition Pump state Situation
Тb > “AlarmTb” Pump Off Boiler overheating
Ts > “AlarmTs” Pump Off Installation overheating danger
Ts < “AlarmFr” Pump On Installation freezing danger
Ts < “minTs” Pump Off Low environmental temperature
To > “AlarmTo” Pump Off Solar panel temperature set has achieved
Ts – To > “DeltaSP” Pump On Heating from Solar panel
Figure 6. Response of the controller according to the temperature of the solar panel
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Figure 7. Control of circulation pump and electric heater. Hyst, Hyst 2, HeatSP and
DeltaSP parameters
SET button using and parameter adjustment:
1. Entering the heater set point - HeatSP – hold SET button for 2 sec. and release. A
HeatSP message has appear and the option to change it with the Up and Down buttons .
Confirms with SET.
2. Setting the system parameters – ho d SET button for 5 sec. until a message appears
Enter in tune. SET is used to confirm and move to the next parameter. Change with the
Up and Down buttons.
3. Setting a (secret and system) parameters– ike above, but with SET pressed
when power is app ied
After passing through all parameters, the main menu is activated again. This also
happens if no action is taken during the setting for 15 seconds
6. SYSTEM PARAMETERS
Parameters Factory
setting
A owab e
va ue
Meaning
"DeltaSP" 5 1  100 °C Auto Mode Pump set point (Figure 7)
"AlarmTb" 85 0  100 °C Tb alarm in automatic mode
"AlarmTo" 80 0  100 °C To alarm in automatic mode
"Hyst " 3 0  10 °C Pump control hysteresis (Fig. 7)
“minTs” 40 -50100 °C Minimum exchange temperature (see pump
control rules)
"HystTs " 1 0  10 °C Hysteresis to “minTs”
"Hyst 2" 1 0  10 °C Heater control Hysteresis
"HeatSP" 45 0  AlarmTb–
Hist2
Heater set point (independent of mode). The
range is automatically respected when
changing to A armTb–Hist2
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Delta
SP
HystHyst
Pump
Ts-To Heat
SP
Hyst2 Hyst2
Heat
To
ON
OFF
ON
OFF

7. SECRET PARAMETERS
To access the secret parameters, the SET button must be pressed when the power is turned on.
Secret parameters are displayed after the last system parameter.The parameters are
available until the power supply to be turn off.
Parameters Factory
setting
A owab e
va ue
Meaning
"Alarm T" 5 0  25.5 s Time delay before the corresponding output is
switched off (when "AlarmTb", "AlarmTо" or
"AlarmTs" are exceeded). Does not apply to
"AlarmFr" which is hysteresis with.
"Filter 1" 20 0  127 Channel 1 filter. Lower value = heavier filter
"Jump 1" 20 0  255 Filter action area 1
"T Jump 1" 10 0  255*0.2s Time of perception of measurement outside
Jump 1
"Filter 2" 20 0  127 Channel 2 filter
"Jump 2" 20 0  255 Filter action area 2
"T Jump 2" 10 0  255*0.2s Time of perception of measurement outside
Jump 2
"Filter 3" 20 0  127 Channel 3 filter
"Jump 3" 20 0  255 Filter action area 3
"T Jump 3" 10 0  255*0.2 s Time of perception of measurement outside
Jump 3
“AlarmТs” 90 0  250 °C Ts alarm (pipeline overheating) in automatic
mode (see pump control rules)
“AlarmFr” 4 -50  50 °C Installation freeze alarm (see pump control
rules)
“HistFr” 1 0  10 °C “AlarmFr” Hysteresis
8. PIN CODE
To activate or deactivate the trial period via the Pin code, the SET and DOWN buttons
(first press SET) must be pressed and held for more than 4 seconds until the message "Input
PIN" has appeared . The pin code is four-digit. 'Set' is displayed when the feature is turned
on and 'C ear' is turned off
When the code is set, after 14 days the controller stops operating in automatic mode
until the same Pin is entered.
9. OFFSET
To adjust the current temperature channel, the SET and UP buttons (first press the SET
button) must be pressed and held for more than 4 seconds untilthe message “Offset” nas appeared
on the screen.
Incorrect intervention results in a measurement error! It has to be used Manufacturer's
Service Specialist only from!
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WARRANTY CARD
Warranty card №:.................................................
Warranty term:................................................. months
Factory number:.................................................
The items were purchased from :..................................................................
Invoice number:............................../............. 20........ year .
GUARANTEE CONDITIONS
The guaranty consists in free repairs of all the factory defects which can occur
during the guarantee period. The repair is performed as in the repair base is being
presented the current guarantee card with which the device is bought. The warranty
does notrefer to issue caused by a bad transport, bad conservation, wrong exploitation,
naturedisasters, not following the instructions and the cases when there is an attempt to fix
anydefects by other people. In those cases the issue is being fixed only against payment.
The maintenance during the guarantee period and doing the claims happens according
to the valid legislation.
PERFORMED REPAIRS IN THE SERVICE
Service Date of
receipt
Order
number Type of repairs done
Date of
transmiss
ion
Carried
out the
repair
Se er:................... Buyer:.................
4, Murgash str., Plovdiv city, Bulgaria, 4000
Тел.: [phone], 640 446 факс: [phone]
www.microsyst.net e-mai : [email protected]
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