Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Schneider Electric India Website×
The motor temperature is detected by PTC probes connected to the ATV58 drive via specific inputs (+10, AI3A, AI3B and COM) on extension card VW3A58201.
The drive's response is as follows:
At nominal temperature, the resistance measured between terminals AI3A and AI3B must be 1500 ohms, corresponding to a maximum of 6 probes (250 ohms at 20°C) or two sets of 3 (sometimes prewired in the motors).
The drive detects an OtF fault on the PTC probes if the impedance value measured on the specific inputs is such that Rprobe > 2000 ohm => Uprobe = 1.66 V.
The OtF motor overheating fault message is triggered indicating that the motor temperature is too high.
The fault is cleared if the resistance of the probe circuit is such that: Rprobe < 1500 ohm => Uprobe < 1.3 V
Caution: It is necessary to observe the recommended wiring, as well as the resistance values: R = 10 kohm in series with the probe.
Sign up for all the latest solutions, offers and best practices straight to your inbox.
We are excited that you have joined the group. You will receive your welcome email soon describing the program and what to expect in the upcoming weeks. Enjoy!