ZIEHL-ABEGG Ucontrol PXDM Series - Function Analog Input 2 for Refrigerant Input

Handbook Ucontrol type-lines PXDM Date 06/04
TBL02_55-GB06/04 Part.-No. 00153239-GB
Page 45 / 105
3.02 and 3.04 operating modes with refrigerant (for use with Ziehl-Abegg pressure sensor type
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.
Selection refrigerant :
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
No further settings are necessary for pressure sensors from Ziehl-Abegg model DSF2-25 (measurement range 2-25 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.
8.4.2 Function analog Input 2 (Analog IN 2 ) second Sensor, external Setpoint, extern manual operation
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.
Modes with two sensors
3.04 + 3.03
E2 Function at 4E
preprogrammed = comparison value comparison value with control to higher temperature
preprogrammed sensor Typ DSF2-25
Possible functions with a free analog input 2 (Analog In 2)
External Setpoint or external speed setting in manual operation with a 0-10 V (0-20 mA, 4-20 mA) signal is possible on
the „E2" and „GND" terminals. Correspondingly insert jumpers E2.1 and E2.2 for analog IN 2 and configure E2 in base
setup.
For potentiometer analog OUT 1 (terminal „A“), program to function 1A (factory setting) = +10 V F IO Setup: Analog
output function.
External Setpoint via external signal (0-10 V, 0-20 mA, 4-20 mA) instead of „Setpoint 1“
The „External Setpoint“ function must be activated in base setup 1E
for E2 function; Set Intern 1 then has no function. A
switchover „Ext. Setpoint“ / „Set Intern 2“ is still possible.
0-10 V (4-20 mA, 0-20 mA) Setting value = 0-100 % sensor measurement range
The active external Setpoint value is displayed in the info menu group.
External speed setting in manual operation (F IO Setup Internal / External).
The „External manual operation“ function must be activated in the basic settings 2E
for E2 function. Switchover between
settings on the device and external manual operation via the digital input (F IO Setup: Internal / External).
Jumper position for:
0-20 mA bzw. 4-20 mA Signal
Jumper position factory setting
for 0-10 V signal
Analog IN 2
J2
J3
E2.1 E2.2
Analog IN 2
J2
J3
E2.1 E2.2
Signal 0-10 V
GND
A
1k
E2
Calculation for relative pressure (differential
measurement of pressure relative to
ambient pressure