9.3
Pressure control for condensers refrigeration
3.01
...
3.04
9.3.1
Base setup
3.01
...
3.04
Base setup
Base setup
Mode
Mode
Mode selection e.g.
3.01
E1 Analog In
E1 Analog In
For all Modes in Group 3 (
3.01
,
3.02
,
3.03
, ...)
“
E1 Analog In
”
factory setting to
“
MBG-30I
”
.
(measuring range 0...30 bar) proportional output 4 - 20 mA
Selection sensor: MBG-30I, MBG-50I, MBG-7I, DSF2-25
Alternative selection signal: 0 - 10 V, 4 - 20 mA, (
jumper for input signal) accordingly
inserted. The sensor measurement-range must be entered in order to correctly display
the actual value.
Example 0 - 10 V sensor and measuring range 0 - 20 bar:
E1 Analog In = 0 - 10 V, E1 Min. = 0.0 bar, E1 Max. = 20.0 bar, E1 Decimals = 1, E1
Unit = bar
E1 Offset
E1 Offset
Sensor calibration with calibrated comparison device
E1 Refrigerant
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
”
!
E2 Function
E2 Function
(only for special applications)
•
External setpoint = Function
|
1E
|
by external signal (0 - 10 V) instead of
“
Setpoint
1
”
. 0 - 10 V
0 - 100 % sensor measuring range.
•
External manual operation via external signal (0 - 10 V) = Function
|
2E
|
. 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
3.03
and
3.04
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.
With
3.03
and
3.04
E2 Function at
|
4E
|
preprogrammed = comparison value with
control to higher value (two circuit condensers).
Selection of the refrigerants:
R12
R13
R13b1
R22
R23
R32
R114
R134a
R142B
R227
R401
R401A
R401B
R402
R402A
R402B
R404A
R407A
R407B
R407C
R410A
R500
R502
R503
R507
R717
Operating Instructions
Fcontrol
–
model series FXDM
Programming
L-BAL-E072-GB 1642 Index 008
Part.-No.
42/105