ZIEHL-ABEGG UNIcon MODBUS Master CXE/AV, Operating Instructions Manual, Page: 38 / 114

9.3 Pressure control for condensers refrigeration 3.01 ... 3.04
9.3.1 Base setup 3.01 ... 3.04
Main menu Base setup
Start
Setting
Protocol
Base setup
Controller Setup
Base setup Mode
Mode selection e.g. 3.01
3.01
Mode
Base setup E1 Analog In
The sensor input is factory set for modes of group 3 to sensor type “ MBG-30I ” .
Measuring range: 0...30 bar
Output signal: 4 - 20 mA
Connection terminals:
“ E1 ” , “ 24V ”
Other settable sensors:
•
MBG-50I (measuring range 0...50 bar, output signal 4 - 20 mA)
•
DSF2-25 (measuring range 2...25 bar, output signal 4 - 20 mA)
•
0 - 10 V, 0 - 20 mA, 4 - 20 mA (for sensors with free measuring range and linear
characteristic)
The sensor measuring range must be entered for sensors with free measuring range in
order to display the actual value correctly.
Example 0 - 10 V sensor and measuring range 0 - 20 bar:
E1 Analog In = 0 - 10 V, E1 Unit = bar, E1 Decimals = 1, E1 Min. = 0,0 bar, E1 Max. =
20,0 bar
MBG0-30
E1 Analog In
Base setup E1 Refrigerant
With 3.02 and 3.04 operating modes with input of the refrigerant, the device automati-
cally calculates the corresponding temperature for the measured pressure. The set-
tings for offset, target value and the controlling range are then carried out in
° C or K.
Calculation for relative pressure (differential measurement of pressure relative to am-
bient pressure). No further settings are necessary for pressure sensors model e.g.
“ MBG-30I ” or “ MBG-50I ” (measurement range 0 - 30 bar or 0 - 50 bar). In the case of
sensors with other measurement ranges, the “ E1 Min. value ” and the “ E1 Max. Value ” .
Setting in “ bar ” although unit display is in “° C ” !
R503
E1 Refrigerant
E1 Offset
Sensor calibration with calibrated comparison device.
The current
“ E1 Actual ” is displayed including the offset set here. 0.00 bar
E1 Offset
Base setup E1 Setpoint min (function depending on the software version available)
Limitation of the adjustable setpoint (see settings for operation)
Setting range: in measuring range of sensor
Factory setting: minimum measurement value
0.00 bar
E1 Setpoint min
Base setup E1 Setpoint max (function depending on the software version available)
Limitation of the adjustable setpoint (see settings for operation)
Setting range: in measuring range of sensor
Factory setting: maximum measurement value
30.0 bar
E1 Setpoint max
Operating Instructions UNIcon MODBUS Master Programming
L-BAL-E207-GB 1723 Index 003 Part.-No.
38/114