Installation - Sensor Electronics SEC 3500 HMI Hardware Manual

IV. INSTALLATION
1. Mounting Instructions:
a. Find an accessible spot for the SEC 3500 to be mounted. This spot
should have enough room for incoming/outgoing wires to be easily
routed around. The SEC 3500 should be accessible at a regular height
so the monitor can be easily accessed at all time alarms. Make sure the
monitor is in a safe location in case of alarm.
b. The SEC 3500 needs to be mounted on a solid wall
c. Recommended Hardware:
i. Use all 4 mounting brackets when mounting the SEC 3500
ii. Bolts: minimum of ¼" – 20 thread, 1 ½" long
iii. Nuts: ¼" – 20 Thread ½" Wide
iv. Washers: Minimum 0.260" ID, 0.750" OD for washers between
2. The SEC 3500 requires an 18-29V DC power supply. This power supply must
cover Class 2 requirements as well as be UL 1310 approved. Then run the
power through the bottom-left hole of the SEC 3500 unit. Then connect the
power supply to the DC-to-DC converter.
3. Run the RS485 (Data Highway) through the bottom-left side hole of the SEC
3500. Then attach to the data highway to the proper terminals on the terminal
block.
4. When connecting 120 VAC (Class 1) circuits to the SEC 3500, wires should be
routed through the top-right opening. Then all class 2 and 3 power circuits going
to the relay switches should go through the bottom-left opening. Class 1 wires
must be kept at least 1/4"inches away from class 2/3 circuits.
5. Relay controller labeled 253 in the SEC3500 HMI housing has relay 1
designated for the alarm horn.
a. The horn needs to be supplied with +24VDC.
6. Sensor Electronics recommends not connecting earth ground and DC common
together. Instead connect earth ground to the bolt inside the enclosure. It is
located inside the enclosure on the bottom left and is connected to the panel
door.
7. For the UL2017 approval, all wiring that interconnects equipment must be
located within the same room.
SEC P/N: 1460014
Rev / ECO: A / 000209
the bolt head and the SEC 3500. Maximum 0.375" ID, Minimum
1.50" OD for washers between mounting wall and bolt
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