Honeywell HC900 사용자 설명서
I/O Module Installation and Wiring - Remote Termination Panel (RTP)
Revision 5
HC900 Hybrid Controller Installation and User Guide
59
9/03
Remote Termination Panel (RTP)
The optional Remote Termination Panel (RTP) provides an easy way to connect the HC900 controller to
the field wiring. The RTP integrates some of the typical externally connected components, reducing wiring
and setup time. It also minimizes the need for multiple wires under a single screw connection by
expanding the connectivity of the shared terminals of the I/O modules.
the field wiring. The RTP integrates some of the typical externally connected components, reducing wiring
and setup time. It also minimizes the need for multiple wires under a single screw connection by
expanding the connectivity of the shared terminals of the I/O modules.
See Appendix B Installation of Remote Termination Panels (RTPs) for details.
Terminal Block-to-Field (Signal) Wiring
Although both of the two available terminal block styles can be used on all I/O module types, wiring
methods vary with the module type and with the type of field devices connected to the terminal block. The
descriptions that follow provide details.
methods vary with the module type and with the type of field devices connected to the terminal block. The
descriptions that follow provide details.
Wiring can be routed through the terminal block at the top, at the bottom, or both. Wiring should be fixed
in place using wire ties at the slotted tabs that are molded in at top and bottom of each terminal block.
in place using wire ties at the slotted tabs that are molded in at top and bottom of each terminal block.
Wiring Rules and Recommendations
In general, stranded copper wire should be used for non-thermocouple electrical connections. Twisted-pair
wiring with shielded cable will improve noise immunity if wire routing is suspect.
wiring with shielded cable will improve noise immunity if wire routing is suspect.
Wire Gage
Observe all local codes when making power connections. Unless local electrical codes dictate otherwise,
the recommended minimum wire size for connections is given in Table 12.
the recommended minimum wire size for connections is given in Table 12.
Table 12 - Minimum Recommended Wire Sizes
Wire
Gauge
Wire Application
14
Earth ground to common power supply.
14 to 16
AC to power supply
10 to 14
Earth ground wire
20
DC current and voltage field wiring
22
DC current and voltage wiring in control room
Routing and Securing Wires
Typically, field wiring is routed to connections at a terminal panel near the controller and then from the
terminal panel to the terminal blocks on the I/O modules.
terminal panel to the terminal blocks on the I/O modules.
Whatever method of routing is used, wiring must be mechanically supported along its length, and must be
protected from physical damage and electromagnetic (noise) interference. (Refer to Installation Planning,
Environmental Considerations, in this manual.)
protected from physical damage and electromagnetic (noise) interference. (Refer to Installation Planning,
Environmental Considerations, in this manual.)
Also, all wires must be securely terminated, using appropriate wiring practices.