Emergency Stop (Estop) Circuit - Lincoln Electric FineLine 170HD Operator's Manual

BK8053-000111 Rev D

3.15 Emergency Stop (EStop) Circuit

The FineLine 170HD System incorporates an EStop circuit meeting Performance
Level (d) Category 3 requirements as per ISO 13849-1 and IEC 62061 standards.
The EStop circuit employs a Safety Relay which controls both the Power Supply and
Gas Controller outputs, disabling both when the EStop is engaged.
The OEM or end user must supply the EStop enable/disable switches and wiring.
The Safety Relay employs dual monitored EStop input circuits. Both are required
and must be isolated from each other for proper operation. Switch contacts must be
rated for 35 VDC, 100mA.
Refer to Figure 14 for the physical location of all connections. Replace the access
panel on the Power Supply when installation is complete.
Power Supply to EStop Connections
1) On the rear of the Power Supply, remove the two jumper wires from
2) Connect the EStop wiring to the terminal block as shown. Route wiring
Access Panel
Removed
Route
through
opening
This information is subject to the controls of the Export Administration Regulations [EAR]. This information shall not be provided to
non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
the terminal block labelled with the symbol shown.
through the opening on the rear of the Power Supply.
Figure 14: EStop Circuit
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FineLine 170HD Plasma System
Pos 12, EStop 2B
Pos 11, EStop 2A
Pos 2, EStop 1B
Pos 1, EStop 1A
EStop
Switch