3 FITTING THE PROFIBUS DP (MK2) OPTION CARD
3.1 Inside an IQ or IQT actuator
The PFU is suitable for fitting into IQ Mk2 actuators with 3000 or 5000 series wiring diagrams and IQT
with 6000 or 7000 series wiring diagrams. The connections and fitting in an IQT is similar to that for an
IQ and the following information effectively relates to both actuator types. The PFU is normally located
in the first option board slot inside the IQ/IQT electrical housing using Main PCB connection SK1. In
addition the PFU can be fitted inside IQ Mk1 actuators in certain cases.
The Interface card must be correctly profiled and loaded with the appropriate connectors to match the
IQ/IQT actuator. The illustration below shows the IQ/IQT version of the PFU. The links for the bias
resistors are shown in the ‘not terminated’ position.
With the IQ/IQT actuator the remote inputs are always present (they are conditioned by the PFU) and
there is an option to include Digital Outputs from relay contacts. If the PFU is required to operate the 4
digital outputs that can be controlled from the card, then the Extra Relay Indication card associated
with these outputs must be fitted into the actuator. The following table describes the wiring harnesses
and their function in the IQ and IQT actuator.
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