Honeywell GX-Series Installation And Setup Manual

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Honeywell GX-Series Installation And Setup Manual Manual pdf 18 page image

GX-Series Control Panel Installation and Setup Guide2-101. The maximum number of devices on each line is shown in Table 2-5:GX-48 (Line 1 only) GX-520 (Lines 1-4)Keypads 8 8 per lineTouch Center 1 1 per lineRIO's 4DCM 4 8 per lineRS232 1 1 (line 1 only)Telecoms 1 1 (line 1 only)Printer 1 1 (line 1 only)Ethernet 1 1 (line 1 only)Table 2-4. Communication Devices2. Minimum wire gauge for field wiring circuits is 22AWG.3. The system must be wired in a daisy-chain configuration. Spur and star configurations must not beused as they reduce the immunity to electrical interference.4. The cable used must screened twisted pair (Part No W002) to connect the RS485 (AB) line. This wouldbe CAT5 or Belden 8723 equivalent.5. Shielded twisted pair cable, where used, is connected to the cabinet ground rod on the GX-Series controlpanel using the P-clip and nut supplied (refer to Figure 2-10).6. The RS485 (AB) line must have a 680 • resistor installed across the A and B terminals of the lastmodule on the line. If twin lines are connected, both ends must be terminated with 680 • resistors andthe appropriate link on the control panel PCB must be removed (refer to Figure 2-9).7. There must only be a single AB pair of wires in each of the cables.8. Supply voltage to the devices is 12 VDC.9. The power supply in the GX-Series control panel and remote power supplies must not be connected in parallel.10. The 0 V of all remote power supplies should be connected in common to the 0 V of the GX-Series controlpanel.11. Ensure that any extension loudspeakers are not wired in the same cable as an AB pair of wires.12. Where possible, ensure that the AB cable is at least 30cm away from any other cables.13. Where possible, ensure that the AB cable does not run parallel to other cables for extended distances(maximum 5 meters).A BAB connectorsRS 485 cabledata linedata lineP-clipCable screenNutP-clipGround Rod(threaded) GX-010-V1Figure 2-10. Connection of cable screen using P-Clip