Avoid Unintended Start; Safe Stop - GE AF-650 GP Operating Instructions Manual

Safety Instructions and Gen...
CAUTION
Leakage Current
The earth leakage current from the drive exceeds 3.5mA.
To ensure that the earth cable has a good mechanical
connection to the earth connection (terminal 95), the cable
cross section must be at least 10 mm
wires terminated separately. For proper earthing for EMC,
see section Earthing in the How to Install chapter.
Residual Current Device
The drive can cause a D.C. current in the protective
conductor. Where a residual current device (RCD) is used
for extra protection, only an RCD of Type B (time delayed)
shall be used on the supply side of this product.
Protective earthing of the frequency converter and the use
of RCD's must always follow national and local regulations.
2.1.5 Before Commencing Repair Work
1. Disconnect the drive from mains
2. Disconnect DC bus terminals 88 and 89 from load
share applications
3. Wait for discharge of the DC-link. See period of
time on the warning label
4. Remove motor cable

2.1.6 Avoid Unintended Start

While the drive is connected to mains, the motor can be
started/stopped using digital commands, bus commands,
references or via the keypad::
•
Disconnect the drive from mains whenever
personal safety considerations make it necessary
to avoid unintended start.
•
To avoid unintended start, always activate the
[OFF] key before changing parameters.
•
An electronic fault, temporary overload, a fault in
the mains supply, or lost motor connection may
cause a stopped motor to start. The drive with
Safe Stop provides protection against unintended
start, if the Safe Stop Terminal 37 is deactivated
or disconnected.

2.1.7 Safe Stop

The AF-650 GP can perform the safety function Safe Torque
Off (As defined by draft CD IEC 61800-5-2) or Stop Category
0 (as defined in EN 60204-1).
It is designed and approved suitable for the requirements
of Safety Category 3 in EN 954-1. This functionality is called
AF-650 GP High Power Operating Instructions
Safe Stop. Prior to integration and use of Safe Stop in an
installation, a thorough risk analysis on the installation
must be carried out in order to determine whether the
Safe Stop functionality and safety category are appropriate
and sufficient. In order to install and use the Safe Stop
function in accordance with the requirements of Safety
2
or 2 rated earth
Category 3 in EN 954-1, the related information and
instructions of the AF-650 GP Design Guide must be
followed! The information and instructions of the
Operating Instructions are not sufficient for a correct and
safe use of the Safe Stop functionality!
2.1.8 Safe Stop Installation
To carry out an installation of a Category 0 Stop
(EN60204) in conformity with Safety Category 3 (EN954-1),
follow these instructions:
Illustration 2.2 shows a Stopping Category 0 (EN 60204-1)
with safety Category 3 (EN 954-1). The circuit interrupt is
caused by an opening door contact. The illustration also
shows how to connect a non-safety related hardware
coast.
1. The bridge (jumper) between Terminal 37 and
24V DC must be removed. Cutting or breaking
the jumper is not sufficient. Remove it entirely to
avoid short-circuiting. See jumper on
Illustration 2.1.
2. Connect terminal 37 to 24V DC by a short-circuit
protected cable. The 24V DC voltage supply must
be interruptible by an EN954-1 Category 3 circuit
interrupt device. If the interrupt device and the
drive are placed in the same installation panel,
you can use an unscreened cable instead of a
screened one.
Illustration 2.1 Bridge jumper between terminal 37 and 24V DC
2 2
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