18
5.2 Dew-point Monitoring
If the dew-point sensor is connected it is possible to monitor the current dew-point. The outlet
dew-point sensor is connected to the PLC controller analogue
INPUT I7/A1
(0…10VDC, -
100…+20°C) and enables the PLC to adjust the adsorption time of the adsorption-regulation
cycle in order to reach a set dew-point. The adsorption time is adjusted in such a way that the
desired dew-point is reached with a maximum possible adsorption time. A high adsorption to
regeneration time ratio means that a smaller percentage of dried air has been used for
regeneration resulting in higher efficiency of adsorption dryer system operation.
It is possible to check the current outlet dew-point measurement on the PLC controller display
by moving through the menus to the
DEW-POINT SENSOR
screen. When in
STATUS SCREEN
press
↓
to proceed to the
DEW-POINT SENSOR
screen. If the sensor is connected then the set
and current dew-point will be displayed. The third line of the screen shows the set dew-point.
The fifth line of the screen shows the current measured dew-point.
Example of DEW-POINT SCREEN
In case of dew-point sensor malfunction, the dew-point rising above the set alarm dew-point
or if the dew-point sensor has been unplugged the DEW-POINT SENSOR OFF status will be
displayed on the
DEW-POINT SENSOR
screen and alarm/warning output
OUTPUT Q6
(Q2 on
the input/output module) will be set to OFF (logical 0).
The alarm dew-point can be set in the SETTINGS menu. →See 5.8 Parameters Settings.
S T A N D - B Y
D
E W - P O I
N T
S
e t
P D P :
- 4 0
° C t d
M e a
s u r
e d
P D P :
- 4 1
° C t d
D E W - P O I N T
S E N
S O R
O F F
Summary of Contents for B-DRY 1000
Page 2: ...2...
Page 15: ...15...
Page 31: ...31 5 10 Electrical Scheme Sensor Connection...
Page 35: ...35...
Page 37: ...37 Enter the password and you will get access to the controller interface...
Page 61: ...61 15 Maintenance Record TYPE OF MAINTENANCE DATE SIGNATURE NOTES Commissioned...
Page 62: ...62...
Page 63: ...63...
Page 64: ...64...
