Introducing the cx-1200 – CONTREX CX-1200 User Manual
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INTRODUCING THE CX-1200
The CX-1200 is a Synchronizing Controller. It controls the Follower machine in a Lead-Follow machine
coordination process. It will command the Follower to match both speed and phase as it tracks the lead
machine, to achieve automatic synchronization between the machines.
Typical applications include packaging, filling, transfer conveyors, wicket ovens, flighted conveyors with
cleats or pockets, and overhead chains with hooks or grippers. The Lead and Follow machines may be of
similar construction, or may be completely different designs, with different motor drives, gear ratios, or
process functions.
The CX-1200 uses four 4 basic signals. An encoder device on each machine gives high resolution speed
information, and also provides a tracking signal to assist the position control. Two marker pulses (photo
eyes, or prox switches) give precise positional information. These synchronization pulses, also called job-
size markers, permit automatic alignment of the correct machine phase or position lock. The follower
machine can start/stop with the lead machine, or it can be started at random into a “running lead” and still
achieve synchronization.
The CX-1200 is a Universal Controller that can operate through a DC, DC Regen, AC Inverter, AC Vector
Drive, or Servo controller. It can be used to retrofit old drives, or work with the latest digital drive products
of any brand.
The built-in operator’s interface, with keypad, multi-line display, and help screens make set-up and
operation simple. A PLC function can help customize the application or coordinate with other machine
control devices. Automatic Learn Mode, Trending Mode, or Fixed Ratio Modes allow it to adapt to any
machine configuration. Multiple configurations or Set points can be pre-programmed, and changed on-the-
fly. Advance/Retard functions permit operator supervision when desired. Serial link, or optional remote
analog signal, or optional DeviceNet card further enhance integration with host control schemes.