www.velocitydetection.com Doc: GLT-311-7-1 Issue: 001 Date: 28/10/2020
VDOT-U5015 Explosion Proof Smoke Detector
SPECIFICATIONS
OPERATING VOLTAGE
—
12-30 Vdc (24 Vdc nominal)
SMOKE DENSITY
—
1.5% - 2.5% obscuration per foot.
(4.9% - 8.2% obscuration per meter).
POWER CONSUMPTION
—
3.5 watts maximum (2.75 Watts at 24 Vdc)
0.674 Watts with no relays energized.
1.23 Watts with one relay energized.
2.12 Watts with two relays energized.
2.68 Watts with three relays energized.
OUTPUT RELAYS
—
Smoke alarm relay, Form C, 5 amperes at 30 Vdc:
The smoke alarm relay has normally open/ normally closed contacts
and normally de-energized operation.
Fault relay, Form A, 5 amperes at 30 Vdc:
The fault relay has normally open contacts and normally energized
operation.
Auxiliary relay, Form C, 5 amperes at 30 Vdc:
The auxiliary relay has normally open/normally closed contacts and
normally de-energized operation.
TEMPERATURE RANGE
—
Operating:
–
20°C to +65°C (
–
4°F to +149°F)
Storage:
–
55°C to +70°C (
–
67°F to +158°F ).
HUMIDITY RANGE
—
5 to 95% relative humidity.
INGRESS PROTECTION
—
IP44
Note: Applicable to ceiling mount only
CURRENT OUTPUT
—
0-20 mA (±0.3 mA) dc current, with maximum loop resistance of 300
ohms from 12-17.9 Vdc, 500 ohms from 18 to 19.9 Vdc, and 600 ohms
from 20-30 Vdc.
TERMINALS
—
UL/CSA rated for 14-18 AWG or 2.5-0.75 mm2 wire.
THREAD OPTIONS
—
3/4 inch NPT or M25.
Multi-port models available.
ENCLOSURE MATERIAL
—
Polycarbonate / ABS - Smoke Detector.
Copper-free aluminum (painted) - Junction Box
SHIPPING WEIGHT (Approximate)
—
7.85 lbs (3.56 kg).
WARRANTY PERIOD
—
1 year.
DIMENSIONS
—
See Figure 2.
CERTIFICATION
—
For complete approval details, refer to the appropriate Appendix:
Appendix A - FM Appendix B - CSA Appendix C - IECEx
Appendix D - Additional Approvals
OPERATION
WARM UP
When the detector is initially powered up, a warm-up period of one
–
two seconds is allotted for internal checks and communication.
During this time, the LED is off and the current level is 3 mA. After
the checks are completed, normal operation will be indicated by the
LED flashing every four seconds (current level is 4 mA).
If the detector is unable to reach the normal operating mode, the
warm-up period may extend to five seconds, followed by a critical
fault or an advisory fault (see Table 1 for all current levels). If the
problem persists, check for any loose wiring connections, ensure
that the voltage supply is sufficient, and cycle power if necessary.
OUTPUTS
Relays
The U5015 detector is furnished with smoke alarm, fault, and
auxiliary relays. All three relays are rated to 5 amperes at 30 Vdc.
