INTERBUS S / Buscoupler
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Supply Voltage - Field Side
Ill. 4: Termination points for the supply voltage - Field side
The connection of the supply voltage is electrically isolated from the internal
electronics. Two CAGE CLAMPS are always connected by a power contact. By this
way, the power supply is taken to different points of the configuration.
It is possible to supply the following at the termination points (Ill. 4):
Volts: 24 V DC - Amps: 10 A DC
WARNING!
120 and 230 V AC can only be supplied via modules 750-609, 750-611 and 750-612!
The supply modules which are permanently integrated on the buscouplers, can be
supplied with 24 V DC only. The current on the power contacts should be max. 10 A.
The voltage is automatically supplied when the function modules are snapped together.
Self-cleaning power jumper contacts (P.J.C.s) ensure safe connections (Ill. 4). Female
contacts (current supply) are integrated in the buscoupler and I/O housings. The male
contacts on the buscoupler and I/O housings supply the voltage to the I/O modules when
inserted together from left to right.
The ground (earth) contact makes first and breaks last conforming to electrical standards
and can be used as protective grounding.
Depending on the I/O function, some modules do not have P.J.C.s. It is important to
note this when assembling a node. Many modules require field side power, many do
not. Please review the circuit diagrams of the individual modules. An additional power
supply module may be necessary.
