3. ELECTRICAL INSTALLATION 39

Fault Output

The fault output is an independent NPN open-collector output which is normally ‘low’, active
‘high’. The output ratings are +30V maximum in the OFF condition and 15mA maximum in
the ON condition. Figure 3-16 shows the output circuit.

Fault

Output

Drive

circuit

0V
Figure 3-16. Fault Output Circuit

Limit Switches

The drive has two limit inputs, the positive limit input and the negative limit input. When
wiring the limit switches it is essential to check that a positive direction command produces
motion towards the positive limit switch.
N
C NEGATIVE
LIMIT NC POSITIVE
LIMIT
+24V
Positive limit input
Negative limit input
POSITIVE
MOTION
Figure 3-17. Limit and Stop Switch Configuration