Channel Menu - Dräger REGARD 3900 Series Instructions For Use Manual

Feature
Fault relay
Channel
Relay
Passwords
Date & time
When using a control unit from the REGARD® 3900 series to detect combustible
gases, at least one gas alarm relay must be set to latching to protect against
explosion hazards. (See DIN EN 60079-29-1:2007 Potentially explosive
atmospheres - Gas detectors - Requirements for the operating behaviour of devices
for measuring combustible gases.)
8.2.6

Channel menu

In the channel menu, you can view and configure the input module channels (4–
20).
The existing input channels depend on the combination of the internal control
modules. In the case of a control unit with 4 input modules (16 input channels), the
following channel arrangement would result:
Module 1 - Channels 1–4
Module 2 - Channels 5–8
Module 3 - Channels 9–12
Module 4 - Channels 13–16
WARNING
Missing alarm
The deactivation of an input module channel after its assignment to an alarm can
cause the alarm to not be activated as desired.
► Do not disable any input module channels after they have been assigned to a
single or group alarm.
Feature
Active
Name
Gas name
Gas unit
Range
Description
Sets the F1 relay (Fault 1) with regard to latching or non-latch-
ing.
Selects the settings for the input channel (4–20) (see chapter
A.5.1 on page 34).
Selects the relay settings (see chapter A.5.2 on page 35).
Resets the access passwords.
Sets the time and date of the control unit. The date format is
YYYY/MM/DD. The time format is HH:MM:SS (when setting the
time, the seconds reset to zero).
Description
Activation (Yes) or deactivation (No) of the channel.
If necessary, enter a unique name/number for the channel (up to
16 characters).
Enter the gas name (up to 6 characters).
Enter the gas units (up to 4 characters).
Select the measuring range from the list (user-defined ranges
are not possible). If a measuring range is selected, the alarm
thresholds for A1 and A2 are automatically set to 20% and 40%
of the range. The table below shows the measuring range, reso-
lution (increment) and decimal places for the alarm thresholds of
A1, A2 and A3.
®
REGARD 3900
Maintenance