1 Intended Use
The PolyGard
2
DC6
is designed for detection and warning of toxic, combustible or dangerous atmosphere
in many commercial and industrial applications.
The intended sites are all areas being directly connected to the public low voltage supply, e.g. residential,
commercial and industrial ranges as well as small enterprises (according to EN50 082).
The PolyGard
2
DC6
Multi Sensor Controller must not be used in potentially explosive atmospheres. The
sensor must only be employed in areas within the environmental conditions specified in the Technical Data.
2 Functional Description
2.1
General
The Multi-Sensor-Controller is designed for the connection of max. three sensors, two of them may be different
cartridges of the SC2 series via local bus and/or two of them analog sensors with 4-20 mA signal of the
AT6
series. The function of the sensor series SC2 or
AT6
is not the subject of this User Manual but can be found in
the User Manual of the SC2 /
AT6
.
The controller monitors the measured values and activates the alarm relays if the set alarm thresholds for pre-
alarm and main alert are exceeded. In addition, the values are provided for direct connection to the BMS via an
RS-485 interface and also as 4-20 mA output.
The SIL 2 compliant self-monitoring function in the
DC6
and in the connected Sensor Cartridge activates the
fault message in case of an internal error as well as in case of a fault in the local bus communication (SC2)
and/or at the 4-20 mA input / output current signals.
Other options such as LCD display, three-color status LED, buzzer, digital input for acknowledgment or test
function, various communication protocols ensure proper adaptation to the wide range of applications in gas
detection technology. For convenient commissioning the
DC6
can be pre-configured and parametrised with
factory-set defaults.
2.2
Function Outputs
SHORT DESCRIPTION OF THE FUNCTION: DIGITAL OUTPUTS WITH THREE RELAYS
Action
Reaction
Relay 1
(Alarm1)
Reaction
Relay 2
(Alarm2)
Reaction
Warning
light
(Alarm 2)
Reaction
Horn
(Alarm 2)
Reaction
Relay 3
(
fault)
Reaction
LED
Sensor signal < alarm threshold 1
OFF
OFF
OFF
OFF
ON
GREEN
Sensor signal > alarm threshold 1
ON
OFF
OFF
OFF
OFF
RED
Sensor signal > alarm threshold 2
ON
ON
ON
ON
ON
RED
Sensor signal
alarm threshold 2,
but button Horn OFF activated
OFF
ON
OFF
after
delay
ON
RED
Measuring signal < (alarm
threshold 2 - hysteresis) but >=
alarm threshold 1
ON
OFF
OFF
OFF
OFF
RED
No alarm, no fault
OFF
OFF
OFF
OFF
ON
GREEN
No fault, but maintenance due
OFF
OFF
OFF
OFF
ON
GREEN
flashing
Internal error
OFF
OFF
ON
OFF
OFF
YELLOW
Note 1: Status O
FF = Relay is configured “Alarm ON = Relay“ or the MSC is free from tension.
Note 2: Alarm thresholds can have the same value, therefore the relays and/or the horn and flashlight can be triggered together.
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com
Specifications subject to change without notice. | GAMSC2_E_0619 | USA 200309 | Page 3 of 17
DC6 – UserManual
