3. ELECTRICAL INSTALLATION 43
Figure 3-22 shows the input characteristic.
+10V
-10V
Commanded
velocity
Volts
Velocity
(rps)
Dead band
Figure 3-22. Analogue Differential Input Characteristic
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 3-23 shows the output circuit.
Fault
Output
Drive
circuit
0V
Figure 3-23. Fault Output Circuit
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