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Programming example 1
Par. 5-19 Terminal 37 Safe Stop
[4]
PTC 1 Alarm
In case the motor temperature is too high, or in the event of a PTC failure, the MCB 112 activates the Safe Stop of the
FC 302 (Safe Stop terminal 37 goes LOW (active) and digital input 33 goes HIGH (active)). This parameter decides the
consequence of the Safe Stop. With this option, the FC 302 coasts, and "PTC 1 SafeStop [A71]" is displayed in the LCP.
The drive must be manually reset from LCP, digital input or serial communication bus when the conditions of the PTC
are acceptable again (the temperature of the motor has dropped).
Par. 5-15 Terminal 33 Digital Input
[80] PTC Card 1
Connects the digital Input of terminal 33 in the FC 302 to the MCB 112, which makes it possible for the MCB 112 to
indicate when Safe Stop has been activated from here.
Alternatively, par. 5-19 could be set to option [5] (PTC 1 Warning), which means an automatic restart when the conditions of the PTC circuit have returned
to acceptable. The choice depends on the demands of the customer.
Combination with other component using Safe Stop
9 Application Examples
FC 300 Design Guide
9-8
MG.33.BC.22 - VLT
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is a registered Danfoss trademark
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