Thermistor Connection - Eaton PowerXL DC1 20 Series Installation Manual

3 Installation
3.6 Electrical Installation

3.6.3 Thermistor connection

106
Motor thermistors and motor thermal switches (Thermoclick) can be
connected to control signal terminal 4 (DI3 = digital input 3) in order to
provide protection against thermal motor overloads.
In this case, parameter P-15 must be used to select the EXTFLT (external
fault) setting for DI3, and parameter P-47 must be set to a value of 6
(Ptc-th).
1 2 3 4 5 6 7 8 9 10 11
T1 T2 U V W PE
M 3 ∼

ϑ
PTC type
≧ 2.5 kΩ trip level
≦ 1.9 kΩ Reset
Figure 62: Thermistor connection
The thermistors and thermal switches used must be PTC-type units (PTC
characteristic, positive temperature coefficient).
The tripping range must fall within a resistance value range of approximately
2.5 - 3 kΩ, while the reset range must fall within a range of 1.9 - 1 kΩ.
DC1...20... and DC1...OE1 Variable Frequency Drives 02/20 MN040059EN www.eaton.com
PES
ϑ
Thermoclick sensor