ABB 83SR06B-E GJR2395400R1210 logic input module
Protection against short-circuit inside the drive or in the supply cableArrange the protection according to the following guide lines.
1) Size the fuses according to instructions given in chapter Technical data. The fuses will protect the input
cable in short-circuit situations, restrict drive damage and prevent damage to adjoining equipment in
case of a short-circuit inside the drive.
2) Circuit breakers which have been tested by ABB with the ACS800 can be used. Fuses must be used
with other circuit breakers. Contact your local ABB representative for the approved breaker types and
supply network characteristics.
The protective characteristics of circuit breakers depend on the type, construction and settings of the
breakers. There are also limitations pertaining to the short-circuit capacity of the supply network.
WARNING! Due to the inherent operating principle and construction of circuit breakers,
independent of the manufacturer, hot ionized gases may escape from the breaker
enclosure in case of a short-circuit. To ensure safe use, special attention must be paid to
the installation and placement of the breakers. Follow the manufacturer’s instructions.
Note: Circuit breakers must not be used without fuses in the USA.
Ground fault protection
The drive is equipped with an internal ground fault protective function to protect the
unit against ground faults in the motor and motor cable. This is not a personal safety
or a fire protection feature. The ground fault protective function can be disabled with
a parameter, refer to the appropriate firmware manual.
The EMC filter of the drive includes capacitors connected between the main circuit
and the frame. These capacitors and long motor cables increase the ground leakage
current and may cause fault current circuit breakers to function.

Emergency stop devices
For safety reasons, install the emergency stop devices at each operator control
station and at other operating stations where emergency stop may be needed.
Note: Pressing the stop key ( ) on the control panel of the drive does not generate
an emergency stop of the motor or separate the drive from dangerous potential.
Restarting after an emergency stop
After an emergency stop, the emergency stop button must be released and the drive
started by turning the operating switch of the drive from position “ON” to “START”.
Power-loss ride-through function
The power-loss ride-through function is activated when parameter
20.06 UNDERVOLTAGE CTRL is set to ON (default in Standard Control Program)
Prevention of unexpected start-up (option +Q950)
The drive can be equipped with an optional Prevention of unexpected start-up
function according to standards:
• EN/IEC 60204-1:1997,
• ISO/DIS 14118:2000,
• EN 1037:1996,
• EN ISO 12100:2003,
• EN 954-1:1996,
• EN ISO 13849-2:2003.
The Prevention of unexpected start-up (POUS) function disables the control voltage
of the power semiconductors, thus preventing the inverter from generating the AC
voltage required to rotate the motor. By using this function, short-time operations
(like cleaning) and/or maintenance work on non-electrical parts of the machinery can
be performed without switching off the AC power supply to the drive.
The operator activates the Prevention of unexpected start-up function by opening a
switch on a control desk. An indicating lamp on the control desk will light, signalling
that the prevention is active. The switch can be locked out.
The user must install on a control desk near the machinery:
• switching/disconnecting device for the circuitry. “Means shall be provided to
prevent inadvertent, and/or mistaken closure of the disconnecting device.”
EN/IEC 60204-1:1997.
• indicating lamp; on = starting the drive is prevented, off = drive is operative.
• safety relay (type BD5935 has been approved by ABB)
WARNING! The Prevention of unexpected start-up function does not disconnect the
voltage of the main and auxiliary circuits from the drive. Therefore maintenance work
on electrical parts of the drive or the motor can only be carried out after isolating the
drive system from the main supply.
Note: The Prevention of unexpected start-up function is not intended for stopping
the drive. If the Prevention of unexpected start-up function is activated when the
drive is running, the control voltage of the power semiconductors is cut off and the
motor coasts to a stop