User Manual

TMCM-102 Manual (V1.01 / 7 November 2007) 14

stop switch and the right stop switch. The left stop switch and the reference switch are wired

together. The center switch (travel switch) allows for a monitoring of the axis in order to detect a

step loss.

left stop

switch

motor

traveler

REF_L_x

right stop

switch

REF_R_x

reference

switch

Figure 5.3: Limit switch and reference switch

5.7.3 One Limit Switch for circular systems

If a circular system is used (Figure 5.4), only one reference switch is necessary, because there are no

end-points in such a system.

motor

ref switch

REF_L_x

eccentric

Figure 5.4: One reference switch

Note: In the actual TMCL, a function is available, which turns the motor left until the reference switch

has been detected. Then the actual and target position are set to zero. In the future, two and three

limit switches will also be supported.