ABB ACH580-31 - Limiting Relay Output Maximum Voltages at High Installation Altitudes; Implementing a Motor Temperature Sensor Connection

Limiting relay output maximum voltages at high installation
altitudes
See section Isolation areas (page 145).
Implementing a motor temperature sensor connection
WARNING!
IEC 61800-5-1 requires double or reinforced insulation between live parts
and accessible parts when:
• the accessible parts are not conductive, or
• the accessible parts are conductive, but not connected to the protective
earth.
Obey this requirement when you plan the connection of the motor
temperature sensor to the drive.
You have these implementation alternatives:
1. If there is double or reinforced insulation between the sensor and the live parts
of the motor: You can connect the sensor directly to the analog/digital input(s)
of the drive. See the control cable connection instructions. Make sure that the
voltage does not exceed the maximum allowed voltage over the sensor.
2. If there is basic insulation between the sensor and the live parts of the motor,
or if the insulation type is not known, you can connect the sensor to the drive
via an option module. The sensor and the module must form a double or
reinforced insulation between the motor live parts and the drive control unit.
See Connecting a motor temperature sensor to the drive through an option
module (page 81). Make sure that the voltage does not exceed the maximum
allowed voltage over the sensor.
3. If there is basic insulation between the sensor and the live parts of the motor,
or if the insulation type is not known: You can connect a sensor to a digital
input of the drive via an external relay. The sensor and the relay must form a
double or reinforced insulation between the motor's live parts and the digital
input of the drive. Make sure that the voltage does not exceed the maximum
allowed voltage over the sensor.
See sections,
• AI1 and AI2 as Pt100, Pt1000, Ni1000, KTY83 and KTY84 sensor inputs
(X1) (page 141)
• Control unit (page 135)
• CMOD-02 multifunction extension module (external 24 V AC/DC and isolated
PTC interface) (page 277)
88 Guidelines for planning the electrical installation