Honeywell 96D A Power, B Communication, Figure 5. Power Wiring, Figure 6. Communications Wiring, Note:, power supply, Depending on total power consumption, avoid

3 Wiring continued

A Power

B Communication

The power requirement range for the AirAlertTM96d controller is 24 Vdc, 500 mA. The system must be grounded to the power supply. A dedicated circuit breaker should be used. Use 14 AWG two conductor, stranded cable (Belden 5100UE or equivalent), up to 1,000 ft.

If the controller is sharing a power supply with multiple sensors on the network, care must be taken to observe voltage drops (line loss) on the power cable. Supply voltages less than 17 Vdc can render some network devices inoperable. Any supply voltage less than 17 Vdc requires the installation of an additional power supply at that point on the power cable.

Depending on total power consumption, avoid

powering more than 10 network devices with one

power supply. Additional power supplies and/or

decreased number of network devices may be

required to compensate for line loss. Contact

Honeywell Analytics for help with all power

requirements.

Note: Terminal J27 must be grounded to

mechanical ground.

J23

Figure 5. Power Wiring

EOL2

EOL3

Out

J22

J23

V+

V-

V+

V-

The communication cables have to be grounded using the shield terminal. Up to 32 network devices can be installed on each channel.

Use 24 AWG two conductor, twisted and shielded cable (Belden 9841 or equivalent) for the connection. The network can be up to 2,000 feet per channel. The length of a T-tap can be a maximum of 65 feet (20 m). A maximum of 130 feet (40 m) for all the T-taps must be respected.

The communication cables have to be grounded using the shield terminal. Use twisted and shielded cable #24/2 AWG (Belden 9841) for the connection.

Note: Channel 4 is the slave communication channel to retransmit the MODBUS signal to PLC. No sensor can be connected to this channel.

Figure 6. Communications Wiring

					End-of-line	Power
EOL3		EOL4		EOL1	jumper position
EOL3		EOL4		EOL1	RC	Fault
					RC	Fault
	RC				R
			RC		R
			RC			TX
	R					TX
	R
			R
						RX
A1 B1 A2 B2 SHLD		J24		B3 A4 B4
A1 B1 A2 B2 SHLD		SHLD A3		B3 A4 B4

Channel 2	Channel 4
Channel 1	Channel 3

Communication Requirements:

•24 AWG twisted pair, shielded (Belden 9841 or equivalent)

•Network can be up to 2,000 feet per channel

•Avoid “T-taps” if possible

•Do not exceed 65 feet per T-tap

•Do not exceen 130 feet total of all T-taps

End-of-line specification:

The E.O.L. jumper for channels 1-2-3-4 must alwaysbe in E.O.L. position

•Communication wire shield must be connected to shield terminal(s) of controller (J23-J24)

•Channels 1-2-3: Modbus protocol — Communicates only with Modbus devices

•Channel 4: Modbus output only — No sensor can be connected to Channel 4