ZIEHL-ABEGG Unicon CXE/AVC 3, Manual, Page: 23 / 63

Operating instructions type-lines CXE/AVC (E)
Date 0917
TBL02_13-GB 0917 Art.-Nr. 00153342-GB
Seite 23 / 63
9.3 Pressure control for condensers refirgeration 3.01 .. 3.04
9.3.1 Basic setting 3.01 3.04
For all Modes in Group 3 (
3.01 , 3.02 , 3.03 ....)
Analog input E1 factory setting to “MBG-30I”
(measuring range 0-30 bar, proportional output 4-20 mA).
Selection sensor: MBG-30I DSF2-25
Alternative selection signal: 0-10 V, 0-20 mA, 4-20 mA,
jumper accordingly inserted. The sensor measurement
range must be entered in order to display the actual value
correctly.
Example: 0-10 V sensor and range 20 bar
Initial value measuring range
Final value measuring range
Decimal places
display unit
Sensor calibration with calibrated
comparison device
3.02 and 3.04 operating modes with refrigerant for use with
Ziehl-Abegg pressure sensor type MBG-30I or DSF2-25
Upon input of the refrigerant, the device automatically
calculates the corresponding temperature for the
measured pressure. The settings 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 ambient pressure
No further settings are necessary for pressure sensors
from Ziehl-Abegg model e.g. MBG-30I (measurement
range 0-30 bar). In the case of sensors with other
measurement ranges, the „E1 Min value“ and the „E1 Max
Value“ must be entered in °C. To do this, convert the bar
values for min and max into °C.
Selection refrigerant :
Function Analog Input 2
•
External setpoint = Function 1E
by external signal (0-10 V) instead of „Setpoint 1“
0-10 V ^ sensor measuring range
•
External manual = function 2E
operation via external signal (0-10V)
Switch over between settings on the device and external
manual operation via digital input
(
) IO Setup).
•
Measurement value = function 7E
e.g. for limit indication, display in Info menu “E2 actual”
•
Modes with two sensors
The function is automatically jointly programmed in
operating modes using 2 sensors. The second analog
input is thus allocated and additional function allocations
are not possible.
3.04 + 3.03
E2 Function at 4E preprogrammed = comparison value with
control to higher value (two circuit condensers).
R12 R13 R13b1 R22 R23 R32 R114 R134a R142B
R227 R401 R401A R401B R402 R402A R402B R404A R407A
R407B
R407C R500 R502 R503 R507 R717
↓ P ↑ ESC
↓ ↑