Operation
Dräger Polytron 5100
19
4.3.20 Fault relay blinking / steady
This function is only available if the relay module is installed.
This feature controls the fault relay during warm-up.
If set to pulse mode, the fault relay is energized for 9 seconds
and de-energized for one second. The yellow LED blinks in the
same fashion.
If set to steady mode, the fault relay is de-energized
throughout the entire warm-up period. The yellow LED is lit
continuously.
The default setting is pulsing.
4.3.21 2-wire or 3-wire configuration
Polytron 5100 can be operated in a 2-wire and 3-wire
configuration.
This function changes the operation mode disabling options
which are too power consuming.
i
i
NOTICE
In 2-wire mode, the instrument does not offer the
options:
{
current source
{
back-lit display
{
remote sensor (unless operated at 24V or
higher)
{
relays
{
LEDs
!
CAUTION
It must be ensured that the setting of this function
matches the wiring for power and signal.
After changing the configuration and returning to
normal operation, the power to the instrument must be
cycled.
4.3.22 4 mA offset
This function adds an offset to the 4 mA analog output.
This function is essential for an installation where the analog
current at the instruments differ from the current at the central
controller.
4.3.23 20 mA offset
This function adds an offset to the 20 mA analog output.
This function is essential for an installation where the analog
current at the instruments differ from the current at the central
controller.
4.3.24 Diag scan
Diagnostic scan to display the error codes.
During normal operation (no faults or warnings), all error codes
will be shown as 00.
The error codes consist of a locater and a pair of numbers
separated by a dot (e.g. 01.02 = ‘P5100 ram crc fault’). Tap
[DOWN] to get all subsequent error codes. After the last error
code has been displayed ‘OK’ will display. This enables Dräger
Service to determine the cause for a message in more detail
and define a remedy.
The diagnostic scan can be entered from normal operation by
tapping and holding [UP] for more than 3 seconds. No
password is needed.
www.norrscope.com
