Wheelock SAFEPATH SAPE-1AB, Руководство по эксплуатации и установке

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SAFEPATH Manual Sheet 31 of 78
Rev. C April 1999
RS-232 Port Wiring
One RS-232 port is provided. It is a ten wire interface. The pin out of the RS-232 port is shown in Figure 13. The field wiring
required will be a function of the protocol implemented. See Appendix A (and B, if applicable) for protocol information.
For RS-232 wiring, connect an RS-232 cable (not supplied) from the control panel to the J2 female socket on the left-side bottom of
the DX-100/DX-200.
Current RS-232 specifications limit RS-232 communication paths to 50 feet in length. A particular installation may be limited to
shorter paths depending on factors such as wire gauge and wire capacitance.
NOTE: When connecting the RS-232 cable to the DX-100/DX-200, either a rectangular hole capable of passing the RS-232 cable
connector will have to be punched in the bottom of the SAFEPATH enclosure or the RS-232 cable will have to be cut four
inches from the cable’s male plug, passed through a conduit entrance, and spliced back together inside the SAFEPATH
panel.
RS-485 Port Wiring
One RS-485 port is optional. It is a four wire interface. The pin out of the RS-485 port is shown in Figure 14. The field wiring
required will be a function of the protocol implemented. See Appendix B, if applicable, for protocol information.
Current RS-485 specifications limit RS-485 communication paths to 200 feet in length. A particular installation may be limited to
shorter paths depending on factors such as wire gauge and wire capacitance.
AC Input Voltage Wiring
Determination of wire gauge for the input voltage wiring should consider all factors, including wire loop length, AC power line
voltage, the maximum SAFEPATH AC current consumption, and the AC input voltage range of the SAFEPATH panel.
IT IS IMPORTANT THAT THE WIRING USED FOR INPUT VOLTAGE WIRING IS LARGE ENOUGH TO CARRY THE MAXIMUM
CURRENT REQUIRED BY THE SAFEPATH PANEL WITHOUT EXCESSIVE VOLTAGE DROP. IF VOLTAGE DROPS FROM AC
POWER LINE LOADING AND WIRING RESISTANCE ARE NOT WITHIN THE SPECIFIED OPERATING VOLTAGE RANGE, THE
SAFEPATH PANEL WILL NOT FUNCTION PROPERLY.
A typical AC input voltage wiring diagram is shown if Figure 15. The SAFEPATH panel shall have its own branch circuit on the main
power panel. The wiring from the main power panel shall terminate in the SAFEPATH panel on the power supply terminals as
shown in Figure 15. Wire jumpers shall then be run from the battery charger terminals to the power supply terminals as shown in
Figure 15. The wire jumpers between the battery charger terminals and the power supply terminals shall be the same gauge as the
wire between the main power panel and the SAFEPATH panel.
Battery Wiring
Determination of the wire gauge for the battery wiring should consider all factors, including wire loop length and the maximum
allowable wire loop resistance. The maximum wire loop resistance is 0.05 ohms. A typical battery wiring diagram is shown in Figure
16.
Earth Ground Wiring
Determination of the wire gauge for the earth ground wiring should consider all factors, including wire length and the maximum
allowable wire resistance. A typical earth ground wiring diagram is shown in Figure 17.
Output Wiring Descriptions
The SAFEPATH panel has six types of outputs. The location of the outputs’ terminal blocks within the SAFEPATH panel are shown
in Figure 9. Detail of the terminal blocks is shown in Figure 18.
Alarm Output Contact Wiring
One alarm output contact is provided. It is Form C and is rated for 0.5A at 24VDC, resistive load. A detail of the alarm output
contact terminal connections is shown in Figure 19. The contact in Figure 19 is shown in the non-alarm position. Determination of
wire gauge for the alarm output contact wiring should consider all factors, including wire loop length, maximum current capacity, and
maximum voltage drop allowable.