ITT PumpSmart PS220, Руководство по конфигурации и эксплуатации

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PS220 Configuration & Operation Guide
193 PS220
Fault T
racing
Safe Torque Off Detection
The PS220 is equipped with two on board Safe Torque off inputs that are located on the control board.
Alternatively, the optional module FSO-12 or FSO-21 can be used if added protection is desired or if local
electrical standards require an external module.
You can also implement the motor thermal protection circuit with or without an FSO safety functions mod-
ule. The FSO safety functions module (FSO-12 or FSO-21) is an optional device used with the PS220 drives
to implement safety functions. When installed, it reserves the standard STO connection of the drive. In this
case, the FSO module activates the STO function of the drive (opens the drive STO circuit) either immediate-
ly or after a deceleration ramp.
The drive monitors the status of the Safe torque off input, and parameter 31.22 selects which indications
are given when the signals are lost. The parameter does not affect the operation of the Safe torque off
function itself. For more information on the Safe torque off function, see the basic wiring diagram in
appendix A-4 or refer to the ABB ACS880 Hardware manual.
Parameter Name Value/Range Notes
31.22 STO Indication Fault / Fault [default]
Fault / Warning
Fault / Event
Warning / Warning
Event / Event
No Indication
Selects which indications are given when one or both Safe torque off
(STO) signals are switched off or lost. The indications also depend on
whether the drive is running or stopped when this occurs.
Note:
1. You cannot connect the temperature sensor directly to the FSO module. You must use
an ATEX-compliant protection relay in between.
2. Jumpers are installed at the factory between OUT1 and In1 and OUT1 and In2. If using
the safe torque –off, remove the jumpers and replace with appropriate contact
blocks or safe torque – off switch.
3. Both inputs must be closed for drive to run the motor. See the Pic below: