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Page 48 of 60 HI 800 177 E Rev. 2.00
4.6.2 2-Pole Connection
The DO+ output and DO- output of a channel are required for 2-pole applications. In each
channel, the DO+ output is permanently assigned to DO- output.
In this case, 8 channels with 16 outputs are available.
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To allow 2-pole connection, the corresponding channels must be configured using the
DO[xx].2-Pole system signal.
In a 2-pole connection, no DI input must be connected to a DO output. This would inhibit the
detection of open-circuits.
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The DO+ output must be connected to the DO- output with the same channel via actuator. DO+
outputs must not be connected together and DO- outputs must not be connected together.
Exception: in pairs wiring
Actuator Free-Wheeling Diode
Figure 12: 2-Pole Connection of an Actuator
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Inductive loads must be connected with a free-wheeling diode on the consumer load.
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