User manual

Table Of Contents
All connections between the controller and the other components of the system pass
through the lower end cap. Cable for the serial communications port is provided in the Toolkit,
and a dummy plug is in place. The end cap bulkhead connectors are labeled as follows:
COMM Serial communications port
CTD CTD sensor communication port
ACM ACM sensor communication port
MOTOR Drive motor
PRV Pressure relief valve
Two clamps (the rear portions of the two lowermost ribs of the frame) secure the
controller housing to the frame. Each clamp is held in place by two socket head nylon cap screws
that are accessible only when the skin is removed. The housing rotates in the clamps. Orient the
housing with the communications port to the back of the MMP (for clear access to the COMM
connector) before replacing the faired end cap. If necessary, loosen and re-tighten the clamps to
achieve this orientation.
Orient housing
with COMM port
to the back
Figure 2-10: MMP Controller Housing End Cap
The pressure relief valve can be opened manually to equalize internal and external
pressures before opening the housing. Screw an 8-32 bolt into the threaded hole in the end of the
pressure plug and pull on the bolt to open the valve.
2-7