Safe Torque Off (X4); Technical Data - ABB ACH580-31 Hardware Manual
Industrial drives
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Also See for ACH580-31:
- Hardware manual (254 pages) ,
- Quick installation manual (33 pages) ,
- Installation manual (238 pages)
Table of Contents
142 Control unit
the shield unconnected or ground it indirectly via a few nanofarads high-frequency
capacitor, for example, 3.3 nF / 630 V. The shield can also be grounded directly at
both ends if they are in the same ground line with no significant voltage drop
between the end points.
1
T
1
1...3 sensor(s) of type Pt100 or Pt1000, or 1 sensor of type Ni1000/KTY83/KTY84
2
Set the input type to voltage for analog input AI1 or analog input AI2 with parameters.
Set the appropriate analog input unit to V (volt) in parameter group 12 Standard AI.
3
Select the excitation mode in parameter group 13 Standard AO.
WARNING!
As the inputs pictured above are not insulated according to IEC 60664, the
connection of the motor temperature sensor requires double or reinforced
insulation between motor live parts and the sensor.
If the assembly does not fulfill this requirement, the I/O board terminals
must be protected against contact and must not be connected to other
equipment or the temperature sensor must be isolated from the I/O
terminals.
￭
Safe torque off (X4)
For the drive to start, both connections (+24 V DC to IN1 and +24 V DC to IN2) must
be closed. By default, the terminal block has jumpers to close the circuit.
Remove the jumpers before connecting an external Safe torque off circuitry to the
drive. See also chapter
Note: Only 24 V DC can be used for STO. Only PNP input configuration can be used.
Technical data
External power supply
Term. 40, 41
T
T
The Safe torque off function (page
Maximum power: 36 W, 1.50 A at 24 V AC/DC ±10% as standard
Terminal size: 0.14 ... 2.5 mm 2 (26 ... 14 AWG)
AI1
2
AGND
...
AO1
3
AGND
221).
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