Power supply ICOS-PS 3160 series
Installation, use and maintenance manual - EN
Ver. 1.05
46
6 Operation and diagnostics
The power supply units are designed to rectify and stabilize the mains voltage (single-phase or three-phase),
in order to deliver power to servodrives or other devices requiring a DC voltage.
ICOS-PS 3160 power supply units also manage the surplus of energy caused by the deceleration of the
motors controlled by the servodrives; this energy is dissipated onto external resistors; this function is called
“dynamic braking”.
Here are the main diagnostic functions of the ICOS-PS 3160 power supply units:
• detection of output overload;
• detection of the absence of one of the supply phases
• detection of undervoltage;
• detection and protection against short-circuit of the external brake resistor.
The control logic of the ICOS-PS 3160 power supply units is directly powered by the mains; it regulates the
charge of the capacitors battery, detects overcharges, controls the dissipation of the energy surplus, and
signals the operational status of the power supply unit itself, by means of specific digital outputs and LEDs.
For a better protection of the supply unit and for a more precise diagnosis of its statuses, it is recommended to
interface the digital outputs to a PLC system which should control the drives supplied by the unit and turning
them on and off at the right moment, also reading their status and their currents and voltages.
6.1 General status
The general status is indicated by LEDs FLT and PWG according to the following table.
Condition
PWG LED
FLT LED
Action
Not powered
Off
Off
Check the power supply
Faulty
Off
Off
Do not use the power supply unit
Faulty
Off/Lamp/on
Off
Do not use the power supply unit
Working
Lamp/on
Off
The power supply can be used
