Dräger REGARD-1 User manual

Dräger. Technology for Life®
Regard-1 Single Channel Controller
Instructions for Use
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WARNING
Strictly follow the Instructions for use. The user must
fully understand and strictly observe the instructions.
Use the equipment only for the purposes specied in this
document.
!

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Regard-1 Single Channel Controller
Contents
Contents
1 For your safety .........................................................4
1.1 General safety statements .........................................4
1.2 Denitions of alert icons.............................................4
2 Description ...............................................................5
2.1 Product overview .......................................................5
2.2 Intended use ..............................................................5
2.3 Limitations on use ......................................................5
2.4 Approvals ...................................................................5
3 User information ......................................................6
3.1 Regard-1 controller overview .....................................6
3.2 Alarms and LEDs .......................................................6
3.3 Display .......................................................................6
3.4 Power LEDs ...............................................................7
3.5 Reset button (and remote reset) ................................7
4 Technical description ..............................................8
4.1 Main board .................................................................8
4.2 Display board .............................................................9
4.3 Pellistor board ............................................................9
4.4 Options board ............................................................9
5 Installation ..............................................................11
5.1 General instructions .................................................11
5.2 Positioning the controller..........................................11
5.3 Controller set up.......................................................12
5.4 Power supplies.........................................................13
5.5 Connecting transmitters and sensors ......................14
5.6 Other inputs and outputs..........................................17
6 Congurationandcalibration...............................20
6.1 Setting the measuring range and TWA function.......20
6.2 Calibrating the Regard-1 controller ..........................21
6.3 Setting the alarm operating modes ..........................23
6.4 Setting the alarm thresholds ....................................24
7 Troubleshooting.....................................................26
8 Maintenance ...........................................................27
9 Disposal ..................................................................27
9.1 Disposal of electrical and electronic equipment.......27
9.2 Batteries...................................................................27
10 Technical data ........................................................28
11 Order list .................................................................29
AnnexeA–Frontpanellabels ..........................................31

4Regard-1 Single Channel Controller
1 For your safety
1.1 General safety statements
● Before using this product, carefully read the Instructions
for Use.
● Do not dispose of the Instructions for Use. Ensure that they
are retained and appropriately used by the product user.
● Only fully trained and competent users are permitted to
use this product.
● Comply with all local and national rules and regulations
associated with this product.
● Only trained and competent personnel are permitted to
inspect, repair and service the product. Dräger recommends
a Dräger service contract for all maintenance activities and
that all repairs are carried out by Dräger.
● Properly trained service personnel must inspect and
service this product as detailed in the Maintenance section
of this document.
● Use only genuine Dräger spare parts and accessories, or
the proper functioning of the product may be impaired.
● Do not use a faulty or incomplete product, and do not
modify the product.
● Notify Dräger in the event of any component fault or
failure.
1.2 Denitionsofalerticons
Alert icons are used in this document to provide and highlight
text that requires a greater awareness by the user. A denition
of the meaning of each icon is as follows:
WARNING
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not
avoided, could result in physical injury or damage to
the product or environment. It may also be used to alert
against unsafe practices.
NOTICE
Indicates additional information on how to use the
product.
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For your safety

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Regard-1 Single Channel Controller
2.4 Approvals
2.4.1 CE marking and ATEX approval
Regard-1 is CE marked to indicate conformity to the following
directives:
● ATEX directive 94/9/EC.
● EMC directive 2004/108/EC.
● Low-voltage directive 2006/95/EC.
The controller also carries the following ATEX marking:
II (2) G
WARNING
THIS MARKING DOES NOT MEAN THAT THE UNIT
IS “EXPLOSION PROOF”. Regard-1 cannot be used in
areas subject to explosion hazards (“hazardous areas”)
without suitable protection.
Display board V2 and the options board are not in the scope of
the ATEX EC-type examination.
2.4.2 Other tests and approvals
In addition to the measuring function for ammable gases in
the range 0 to 100%LEL and for oxygen (inertization) in the
range 0 to 25%(V/V), Regard-1 has been tested according
to DIN EN 45544-1 combined with DIN EN 45544-2 for toxic
gases, and according to DIN EN 50104 for oxygen enrichment
and oxygen deciency, by DEKRA EXAM GmbH, Bochum,
Germany.
In Germany only:
The “Bericht über die Eignungsuntersuchung” has been issued
under PFG-No. 41301303. Read and consider Chapter 5 of
the “Bericht über die Eignungsuntersuchung” (which follows in
German language version of the manual only).
2.4.3 Special conditions for safe use according to EC-
typeexaminationcerticateBVS03ATEXG011X
Vibration can cause malfunction of alarm and fault contacts.
Do not expose to vibrations with frequencies above 55 Hz or
amplitudes above 0.15 mm.
For safety relevant decisions, only use the status of the
relays. Do not use the display reading or LED indications. For
calibration and adjustment of alarm set points use a voltmeter
between test points TP1 and TP2 to determine the gas reading
and the alarm thresholds.
Do not set an alarm threshold below 0% or above 100% of the
measuring range.
For Regard-1 SE Ex, verify that the gas concentration at the
sensor is below full scale before resetting latched alarms.
If the control unit Regard-1 4-20 is operated with a remote
sensor for ammable gases whose output current can be
below 20 mA for concentrations above full scale, verify that
the gas concentration at the sensor is below full scale before
resetting latched alarms.
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Description
2 Description
2.1 Product overview
The Regard-1 is a single channel controller that is used with a
gas detector to provide stationary, continuous monitoring and
warning of potentially dangerous or harmful conditions. The
controller is available in two main variants: Regard-1 4–20 mA
for use with a 4–20 mA transmitter; or Regard-1 SE Ex for use
with an SE Ex sensor. The internal components and settings
differ for each of the variants, and additional functionality can
be enabled by installing optional components or conguring
the controller settings.
More detailed descriptions of the controller and the available
functions are shown in the user information (see Section 3 on
Page 6).Additional information for installation and maintenance
technicians is shown in the technical description (see Section 4
on Page 8).
2.2 Intended use
The Regard-1 single-channel controller is suitable for use
in residential, commercial and industrial environments to
provide:
● Display of measured gas level.
● Visual and audible alarms at the controller and alarm
outputs to external warning devices.
● TWA (time-weighted average) output and a datalog of
controller events (only available on controllers tted with
an options board).
The controller can be used with a 4–20 mA transmitter or an
SE Ex sensor to provide the following functions:
● Regard-1 4–20 mA: For stationary, continuous monitoring
of ammable or toxic gases and vapours, and oxygen
deciency or enrichment.
● Regard-1 SE Ex: For stationary, continuous monitoring of
ammable gases and vapours.
The Regard-1 controller is certied according to the directive
94/9/EC (ATEX Directive) to be operated with performance
approved 4–20 mA transmitters (EC-type examination
certicate BVS 03 ATEX G 011X), or with Dräger sensing
heads SE Ex PR M, SE Ex PR M* DD or SE Ex HT M DD.
2.3 Limitations on use
WARNING
Do not use the Regard-1 controller in areas subject to
explosion hazards (“hazardous areas”) without suitable
protection. Contact Dräger for further information.
The Regard-1 controller cannot be used with the following
detector types:
● Dräger SE Ex LC sensor.
● Three-wire transmitter that has a 4–20 mA sink output.
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6Regard-1 Single Channel Controller
The inhibit LED only illuminates during maintenance or repair
of the controller. When illuminated, the LED indicates that the
controller internal relays are forced to the non-alarm or non-
fault state.
3.2.1 Internalbuzzer
A buzzer inside the controller provides an audible alarm when
any alarm or fault activates, and during the controller start-up
sequence.
3.3 Display
When tted, the display normally shows the gas level, but
it also indicates a number of other warning or information
messages.
Normal gas level reading.
Negative gas level reading – A negative reading may
occur due to drift or temperature effect. If a negative
reading appears frequently or for long periods, refer
to the troubleshooting information (see Section 7 on
Page 26).
Under range – The gas level is below the measuring
range. Refer to the troubleshooting information (see
Section 7 on Page 26).
Over range – The gas level exceeds the measuring
range. The over range indication is latching and
can only be cleared when the gas level is within the
measuring range. Press the reset button to clear an
over range indication.
TWA reset to zero.
3.3.1 Self test
Each time that the controller is connected to a power supply or
switched on, it performs a self test and then enters the active
mode. The self test sequence is shown below.
Start of self test.
Display board rmware version (rmware versions
available: r1.00, r1.01, r2.00 and r 2.01).
Start of countdown.
End of countdown.
At the end of the self test, the display shows the gas level and
the internal buzzer sounds. Press the reset button to silence
the buzzer.
If the controller fails the self test, or if the display board
watchdog detects a fault condition, the countdown will cycle
on the display screen. Refer to the troubleshooting table for
possible reasons (see Section 7 on Page 26).
0.50
-0.5
-Ur-
-Or-
tA-0
Test
r1.00
9999
. . . .
3 User information
3.1 Regard-1 controller overview
3.2 Alarms and LEDs
WARNING
The alarm levels and the activation modes are congured
to meet the requirements of the user. Therefore, the
actions and countermeasures which are to be taken
when any gas or fault alarm activates must be dened
by the person responsible for the gas detection system.
When an alarm condition occurs, it activates an alarm relay
inside the controller, illuminates the relevant LED and triggers
the internal buzzer. The internal relays are connected to the
external warning devices selected by the person responsible
for the gas detection system. The external warning devices
provide the main indication of alarm activation.
The controller provides up to three detection alarm levels (A1
to A3) and a fault alarm. Additionally the controller can provide
a TWA (time-weighted average) alarm facility if required. The
TWA is an average gas level calculated over a preset period.
Alarms can be latching or non-latching, and can be set to
activate when rising or falling.
● Latching alarms remain activated when the alarm condition
is no longer present.
● Non-latching alarms switch off when the alarm condition is
no longer present.
Additionally, the A2 alarm can be set to be acknowledgeable.
When the A2 alarm is set to be acknowledgeable, the alarm
device connected to the A2 alarm output can be switched off or
silenced when the alarm condition is still present.
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User information
3426
1
3
5
2
4
1 Alarm, fault and inhibit LEDs (see Section 3.2).
2 Label window. Shows the measured gas, range, units and
alarm settings.
3 Display (optional) (see Section 3.3).
4 Power LEDs (see Section 3.4 on Page 7)
5 Reset button (see Section 3.5 on Page 7).

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Regard-1 Single Channel Controller
3.4 Power LEDs
The power LEDs illuminate to indicate that power is supplied
to the controller:
● When DC is supplied, only the DC power LED illuminates.
● When AC is supplied, both LEDs illuminate (the DC power
LED illuminates to indicate that internal battery charging
supply is available).
When an AC supply is used, rechargeable batteries may be
tted to provide a backup in case of main supply failure. When
tted the rechargeable batteries provide continued operation
for several hours if AC power is interrupted.
3.5 Resetbutton(andremotereset)
The reset button is used to acknowledge or cancel alarms
and messages. When a remote reset switch is connected to
the controller, it performs the same functions remotely from the
controller.
Reset button (and remote reset switch if available) operation:
● Pressing and releasing the reset button:
○ Acknowledges or resets activated alarms.
○ Cancels other on-screen messages (for example: an
over range (-Or-) message).
● Pressing and holding the reset button for approximately
10 seconds resets the TWA value to zero (display message:
tA-0) and restarts the TWA calculation period.
User information

8Regard-1 Single Channel Controller
Technical description
4 Technical description
4.1 Mainboard
1 24 V Battery terminals (see Section 4.1.4 on Page 9).
2 Fuses (see Section 4.1.3 on Page 9).
3 Input and output terminals (see Section 4.1.1 on Page 8).
4 Maintenance inhibit jumper socket (see Section 4.1.2 on
Page 9).
Further explanation of the main board components and
connectors is provided in the installation and calibration
information later in the document.
4.1.1 Input and output terminals
3427
Terminal Function
1 2
Reset
Remote reset input
3 4
- 20 mA +
4–20 mA output (requires options board)
5 6
- 24 V +
24 Vdc unswitched output (100 mA max.)
7 8 9
- Input +
4–20 mA transmitter or SE Ex sensor input
10- 11+
12- 13+
A1 24 V switched output (100 mA max.)
A2 24 V switched output (100 mA max.)
14 15 16
17 18 19
A1 relay output
A2 relay output
20 21 22
23 24 25
TWA relay output (requires options board)
A3 relay output
26 27 28
29 30 31
Fault relay output
Inhibit relay output
N E L 98 to 253 Vac fused output (500 mA max.) (back row terminals)
98 to 253 Vac input (front row terminals)
3427
1
2
4 3

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Regard-1 Single Channel Controller
4.2 Displayboard
A display board is an optional component which, when tted,
provides the display. There are two versions of the display
board available:
● V1 – Contains rmware version r1.00 or r1.01. Calculates
a TWA gas level over eight hours.
● V2 – Contains rmware version r2.00 or r2.01. Calculates
the TWA gas level over a user adjustable period.
4.3 Pellistorboard
A pellistor board is used with SE Ex sensors to supply a
constant current to the sensor, and amplify the signal from
the sensor. The pellistor board has a 4-pole switch and three
potentiometers that are used during the calibration of an SE Ex
controller (see Section 6.2.2 on Page 22).
4.4 Optionsboard
An options board is an optional component which, when tted
to the controller, provides:
● A TWA alarm relay (requires display board V2 to operate).
● A 4–20 mA output proportional to gas level (on terminals 3
and 4 of the main board).
● A datalog output with RS-232 communication.
4.4.1 TWA(time-weightedaverage)
The TWA is an average gas level calculated over a dened
period:
● For rmware version r1.00 or r1.01, TWA is calculated over
the previous eight hour period.
● For rmware version r2.00 or r2.01, TWA is calculated over
a user adjustable period. The default setting is eight hours
but it can be adjusted to a user dened period.
Connecting or switching on the controller, or resetting the
TWA (see Section 3.5 on Page 7), starts the TWA gas level
calculation. The TWA value is not available until the initial
calculation period (eight hours or other user dened period)
has elapsed. Once the initial period has elapsed the TWA gas
level is constantly updated.
● The TWA gas level is recorded in the datalog.
● When the controller is tted with a V2 display board, the TWA
gas level can be used to activate the TWA alarm relay.
NOTICE
The rmware version is shown on the display for a few
seconds when the controller is connected or switched on.
To adjust the TWA calculation period or to set the
TWA alarm relay requires additional software which is
available from Dräger. Contact Dräger for details.
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Technical description
4.1.2 Maintenanceinhibitjumpersocket
A jumper is tted to the JP1 terminals on the main board to
inhibit alarms and fault signals during testing or calibration.
When an inhibit jumper is tted all relays will be held in their
normal (non-alarm or non-fault) state.
4.1.3 Fuses
Fuse F5 – AC output fuse (500 mA)
Fuse F6 – AC input fuse (500 mA)
4.1.4 24VBatteryterminals
The 24 V battery terminals are for connection of an external
DC supply (18 to 30 Vdc), or for rechargeable batteries as a
backup supply when an AC supply is used for the controller. Full
details are in the power supplies information (see Section 5.4
on Page 13).
3434
Maintenanceinhibitjumpersocket
3429
Fuse F5
Fuse F6
3430

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3432
RJ11 socket
4.4.2 Datalog
When the controller is tted with an options board, the system
records a datalog of events which can be viewed on a PC.
The datalog output uses RS-232 communication to output
the datalog on an RJ11-style socket on the options board. A
PC connection lead is available from Dräger (see Section 11
on Page 29) and details of the lead are shown in the table
below.
Technical description
RJ11 socket RS232SubD–9Pole
Pin Function Pin Function
1 Rx 3 Tx
2 0 V 5 GND
3 Tx 2 Rx
4 0 V 5 GND
1 nc
6 nc
7RTS
8 CTS
9 nc
NOTICE
To view the datalog or change the datalog settings
requiresaPC utility(for example:MicrosoftHyperTerminal
or HyperACCESS by Hilgraeve). Contact Dräger for
details.
When connected to a PC, data is sent by the controller as
ASCII characters (see Section 10 on Page 28 for the datalog
specication). Additionally, the gas level and TWA are printed
on screen every second in the following format:
Gas 20.1 TWA 0.1
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