Installation - Danfoss DGS-SC Installation And Operation Manual

Installation and Operation Guide | DGS Modbus

7. Installation

To install the DGS unit on the network, first set the network ad-
dress (see section 4.4 of this manual). Following this, the DGS unit
can be installed on the network and configured in the Front End.
(see Front End manual for specific details)
For communication speeds other than the default 38.4k, please
refer to section 4.4 of this manual and the manual of the system
manager.
Survey of functions
Function
Gas level
Actual gas level in %
The actual gas level is displayed here as a percentage of the full scale ppm. The full scale ppm
can be viewed in the "Service" group.
Example: If the full scale value is 1000ppm and the sensor is measuring 400ppm, the value is
40%
Actual gas level in ppm
The actual gas level is displayed here as a ppm value.
Alarms
As default the potentiometer in the DGS unit defines the alarm limit (see section 4.3) and the
warning function is disabled.
By changing the value of the "Alarm Limit" parameter, the alarm parameter defines the alarm
limit and the Warning function can be enabled.
Changing the alarm limit parameter to zero will enable the potentiometer alarm setting and
disable the warning function. The potentiometer value is read back to the Alarm Limit param-
eter and presented (zero is overwritten).
It is not possible to adjust the alarm limit below the actual warning limit.
It is not possible to adjust the warning limit above the actual alarm limit.
If this is attempted, the value is considered invalid and ignored.
Critical alarm indication
Common indication of alarms (any alarms active excl. warnings)
The indication is given as soon as the alarm condition is present regardless of any alarm time
delays
0 = No active alarm(s)
1 = Alarm(s) active
General alarm incication
Common indication of any alarms incl. warnings
The indication is given as soon as the alarm condition is present regardless of any alarm time
delays
0 = No active alarm(s) or warning(s)
1 = Alarm(s) or warning(s) active
Alarm limit in %
The alarm limit can be set as a percentage of full scale ppm. The full scale ppm can be viewed
in the "Service" group.
Example: If the full scale value is 1000ppm and the sensor should give alarm at 500ppm, the
value is entered as 50%
Alarm limit in ppm
The alarm limit is entered here as a ppm value.
Time delay for level alarms
High alarm delay in minutes.
If set to 0, the hardware jumper configuration is used. This means that the hardware configured
delay will be shown (zero is overwritten).
If set to a value above zero, this value is used instead of the hardware jumper configuration.
The value is used both as delay for limit alarm and warning.
Reset alarm in DGS unit
Will mute the buzzer and reset the alarm relay. The alarm remains active (LED and Modbus)
until the alarm condition disappears.
© Danfoss | ADAP-KOOL® | 2016.12
SW 1.1x
Parameter by operation via data
communication
Gas level %
(shown in all menu displays)
Gas level ppm
(shown in all menu displays)
Alarm settings
GD alarm
Common errors
Alarm limit %
Alarm limit ppm
Alarm delay
Reset alarm
RS8HJ102 | 17