Johnson Controls York AYK550, User Manual

Page: 109 / 279

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YORK, A Johnson Controls Company
2Q_2,2'@
This group defines the detection and reporting for a particular potential fault – motor
overheating, as detected by a temperature sensor. Typical connections are defined
below.
6 78*^^^]<32;2 42=3 ,2 ;,? ,
3,94=24==;,24=,=<@ ,?9=9,9
2 =2 3=,2=2 3=,;, 2,=2 =,3,2,92,=,,9>
To fulfil the insulation requirement, connect a thermistor (and other similar
components) to the drive’s control terminals using any of these alternatives:
• Separate the thermistor from live parts of the motor with double reinforced
insulation.
• Protect all circuits connected to the drive’s digital and analog inputs. Protect
against contact, and insulate from other low voltage circuits with basic insulation
(rated for the same voltage level as the drive’s main circuit).
• Use an external thermistor relay. The relay insulation must be rated for the same
voltage level as the drive’s main circuit.
2,2
T
10 nF
One Sensor
AI
1
AGND
AO
1
AGND
2,2
T
T T
Three Sensors
10 nF
AI
1
AGND
AO
1
AGND