FA49, Feedback process channel error (1Vss)

When this diagnostic message appears it may indicate an error in the analog signal for the feedback system (1Vss). The AX5000 monitors the output signals from the sin/cos 1Vss feedback system and switches off the drive when the signal lies outside the tolerance range between 0.53 Vss and 1.34 Vss. The feedback systems are specified in such a way that they only supply exact values within the stated tolerance range. Beyond this the values may be usable but are not necessarily so.