Conair SC-5 manual Checking Repeatability, 3-12, Type of Cutter, Repeatability Time

CHECKING

REPEATABILITY

Before any Conair SC-5’s are shipped, they are tested for cut time repeatability to be sure they are within performance spec- ifications. The repeatability test checks the performance of the rotary knife cutter to return to the home park position after a complete cut. Acceptable repeatability times allowed for each cutter model prior to shipping are:

Type of Cutter	Repeatability Time
AC Pneumatic Cutter	Less than 1 millisecond
DC Pneumatic Cutter	Less than 1.5 millisecond
Positional Servo	Less than 0.1 millisecond

Note: 1-millisecond at 60 feet per minute is equal to 0.012 inches.

The repeatability mode is built into the Conair cutter controls and allows you to perform similar tests, without any external test equipment. It is recommended that you check repeatability on a regular basis. Refer to Operation Section 4, Control Instructions Test to run repeatability tests. Acceleration/decel- eration delays of the servo do not contribute to repeatability error; any error is attributed solely to motor stability, cou- plings, assembly, power, and proximity sensor alignment.

Use any blade speed and line speed. The line speed is only seen while in the Encoder or Product modes. It is recommend- ed that the tests be performed at cut intervals between 0.5 and 5-seconds. Do not change the blade speed or the line speed after starting the test.

3-12 INSTALLATION SC-5 SURE CUT Servo Knife Cutter UGE059/1003