77
Power Supply Wiring
Section 3-5
Before connecting the power supply, first connect a DCN4-TB4 Open Type
Connector to the communications connector to convert it to a screw terminal
block.
When using a Repeater Unit, supply power through the BS+ and BS
−
termi-
nals of the Repeater Unit's PORT1 connector.
Round Cable II or Flat
Cable I/II
Connect a 24-VDC power supply to the Master Unit's communications power
supply connector (BS+ and BS
−
). This provides communications power to
each Slave Unit and Repeater Unit connected by round cable II or Flat Cable
I/II. Connect only one communications power supply for the trunk line. The
cable between the communications power supply and the communications
power supply connector must be no longer than 3 m.
When Repeater Units are used, communications power to sub-trunk lines is
supplied by the downstream port communications power supply connectors
(BS+ and BS
−
) of the Repeater Units. The cable between the communica-
tions power supply and the communications power supply connector must be
no longer than 3 m.
+
−
BS+
BS-
Connect an Open Type
Connector here.
24-VDC
communica-
tions power
supply
Overcurrent
protection (See note.)
(current limit: 4 A)
Note:
When complying with UL standards, install a
device to limit the current between the
external power supply and the Unit to 4 A or
less for the communications power supply.
Connect an Open Type Connector here.
24-VDC
communica-
tions power
supply
BS
BS
PORT1
PORT2
Overcurrent
protection (See note.)
(current limit: 4 A)
Note:
When complying with UL standards, install a device
to limit the current between the external power
supply and the Unit to 4 A or less for the
communications power supply.
Communications
power supply
connector
3 m max.
Master Unit
Communi-
cations
power
supply
Communications
power supply,
24 VDC
Communications
connector
Round cable II or
Flat Cable I/II
Slave Unit
Terminating Resistor
Slave Unit
Slave Unit
Overcurrent
protection (See note.)
(current limit: 4 A)
Note:
When complying with UL standards, install a
device to limit the current between the external
power supply and the Unit to 4 A or less for the
communications power supply.
Содержание CRT1 - 10-2008
Страница 2: ...CRT1 Series CompoNet Slave Units and Repeater Unit Operation Manual Revised October 2008...
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Страница 9: ...x...
Страница 15: ...xvi...
Страница 23: ...xxiv Conformance to EC Directives 6...
Страница 51: ...28 Slave Unit Models Section 1 2...
Страница 123: ...100 Connecting External I O for Slave Units Section 3 6...
Страница 365: ...342 Temperature Input Units Section 7 5...
Страница 381: ...358 Expansion Unit Specifications Section 8 2...
Страница 418: ...395 Repeater Unit Section 10 2 Dimensions 42 3 50 3 1 27 5 95 mm...
Страница 419: ...396 Repeater Unit Section 10 2...
Страница 424: ...401 CX Integrator Section 11 1...
Страница 575: ...552 Current Consumption Summary Appendix D 552...
Страница 581: ...558 Index...
Страница 583: ...560 Revision History...