CONTREX CX-1200 - Manual (Page 3)

Page 1
INTRODUCTION
The CX-1200 motion controller is used with various types of motor drives for precision control of
synchronized applications. The typical application consists of a syncronizing a continuous moving process
which can be of either two parts of a final product (e.g., bottles and bottle caps) or two parts of a machine
(e.g., gear keyway to conveyor flight).
This guide is intended to assist with the start up of elementary systems. More involved applications should be
implemented only after the system is working as herein described. Refer to the CX-1200 Technical Reference
Manual for a comprehensive and detailed explanation of the CX-1200’s features and operations.
The CX-1200 start-up procedure consists of:
• Basic Wiring
• Operator Interface Primer
• System Setup Procedure
The following assumptions are made:
• Except for the changes required here, the CX-1200, including its PLC, will be programmed as factory
default.
• The default tuning for the CX-1200 should be stable for most applications and will not be discussed
here.
This information is useful (but not essential) to complete setup.
• Accel/Decel Rates: Adjust the Accel/Decel rates in the motor drive (amplifier), to their fastest rates
(shortest time), to allow the CX-1200 command signals to promptly generate a correct response from
the motor.
• Safety Stops/Inhibits/Enables: The CX-1200 has a Drive Enable open collector output, to be used
(via pilot relay if needed) to enable/disable the motor drive. This is important since there are situations
where the CX-1200 is trying to hold a “live zero”, or “active stopped”, H-Stop state. At other times the
drive enable is turned off (disabled). While the drive enable function could be part of some external
process control scheme, it is best to let the CX-1200 control the drives as required by the internal
control algorithms. Having said this, also consider SAFETY. The CX-1200 stop commands are solid
state items. Overall system safety would require interlocked, external, pushbuttons, contacts, etc. to
effect a disconnect type of safety stop. CX-1200’s “live zero” may appear to be a stopped condition, but
would NOT be safe to enter the machine for thread-up, jam clearing, etc.