Leads; Marking Of The Leads - phytron LSS 26 Manual

How to Handle In-Vacuum and Cryo Stepper Motors

6.2 Leads

6.2.1 Marking of the Leads

HV (high vacuum) and UHV (ultra high vacuum) stepper motor wires are the same colour
and are identified by coloured PTFE tubes:
Fig. 7 : Marking of the wires by coloured PTFE tubes
In case of motors with built-in type K thermal elements, the minus pole is magnetic.
i
HV stepper motors
The tubes can remain on the wires if desired.
UHV stepper motors
i
- The PTFE tubes can remain on the wires, if the motor is only oper-
ated in the temperature range up to +200 °C or 10
When temperature or radiation is higher, the tubes have to be re-
moved.
- Before mounting the motor: Do not remove the PTFE tubes!
The wires can only be identified by their markings.
- Connecting the wires: Only remove the PTFE tube from the wire
being connected. Be careful not to mix up the wires. The start and
end of a winding in an 8-lead stepper motor cannot be determined
by measurement.
- Recommendation: Keep the PTFE tubes! If disconnecting the
stepper motor, the markings should be reattached.
18
4
rad radiation.
MA 1203-A010 EN