Relays; Configuring Relay A1 Or A2; Setting Fault Relay Warm-Up; Testing Alarms/Relays - Dräger PointGard 2000 Series Instructions For Use Manual

Pre-Acknowl- Alarm status is acknowledgeable before the
edgeable alarm condition clears. However, the alarm
relay and LED stay active until the alarm
condition clears.
e. Set the hysteresis mode.
The hysteresis function defines an interval where a
triggered relay maintains its status until the gas
concentration is outside the defined interval. Example:
Alarm threshold is set to 40 ppm and hysteresis to
3 ppm The alarm stays active until the value falls
below 37 ppm. This prevents relays from chattering at
an alarm threshold.
 A confirmation screen shows all settings.
f. Select Confirm and confirm with OK.
✓ The new settings are saved.

11.2 Relays

With factory default settings and during normal operation, the
relays are energized. This provides a "fail-safe" operation.
For PointGard instruments the setting Normally energ. must
not be changed to Energ. on alarm, otherwise the built-in
alarm devices (horn and strobes) are triggered!

11.2.1 Configuring relay A1 or A2

This function defines whether the alarm relay is energized
during normal operation or energized at an alarm condition.
1. Select Settings > Instrument > Alarm> Relay A1 or
Relay A2 and confirm.
2. Select the desired option and confirm.
Normally The relay contact is energized during nor-
energized mal operation and changes if an alarm is
triggered. At a loss of power this triggers an
alarm (fail-safe).
Energ. on If an alarm is triggered, the relay contact is
alarm energized.

11.2.2 Setting fault relay warm-up 1

This function is used to set operation of the fault relay during
warm-up 1 to indicate the warm-up 1 state on the relay output.
1. Select Settings > Instrument > Alarm> Fault warm up
the desired option and confirm.
static The fault relay triggers a connected alarm
indicator permanently.
The orange LED is lit continuously.
dynamic The fault relay switches state for 9 seconds.
Example:
– A horn is connected to fault relay output
Normally Open.
– Relays are configured as normally ener-
gized.
 The horn and the orange LED of the
transmitter are 1 second active and 9
seconds in-active.
Instructions for use |
Dräger PointGard 2000 Series

11.3 Testing alarms/relays

These functions change the status of a relay and LED for test
purposes (e.g. to check the function of alarm devices
connected to the relay) and the symbol
exiting this function, the status of the relay and LED will
automatically return to their previous status.
1. Select Settings > Instrument > Alarm the desired alarm
condition and confirm.
Set Alarm A1 Simulates pre-alarm
Set alarm A2 Simulates main alarm
Set fault Simulates fault signal
2. Select Enable or Disable and confirm.
✓ If the function is activated, the fault relay is de-energized
and the 4 to 20 mA interface is set to the fault current. The
yellow LED is lit, the symbol for maintenance is shown.

11.4 Setting passwords

1. Select Settings > Instrument > Passwords the desired
password and confirm.
Calibration Access to zero and span calibration
PWD
Settings PWD Access to all configuration parameters
2. Select the line for editing the password and confirm.
3. Set the password and confirm.
4. Select Confirm and confirm with [OK].

11.5 Setting date and time

1. Select Settings > Instrument > Date and time and
confirm.
2. Select the line for editing the date or time and confirm.
3. Select Confirm and confirm with [OK].

11.6 Setting language

1. Select Settings > Instrument > Language and confirm.
2. Select a language from the list and confirm

11.7 Configuring function key

1. Select Settings > Instrument > Function key and
confirm.
2. Select a function and confirm.
Graph The measurements of the past 15 minutes
are displayed as a time/concentration
graph.
Faults Fault messages are displayed in plain text.
Warnings Warning messages are displayed in plain
text.
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Instrument settings en
is displayed. After
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