Banner ES-FA-6G Safety Module - Manual (Page 5)

It is recommended that in all circumstances the installation of the Safety Module and its associated safety input devices are installed to
eliminate or minimize the possibility of failures and faults that could result in the loss of the safety function(s). Methods to eliminate or
minimize the possibility of these failures include, but are not limited to:
• Physically separating interconnecting control wires from each other and from secondary sources of power.
• Routing interconnecting control wires in separate conduit, runs, or channels.
• Locating all elements (modules, switches, and devices under control) within one control panel, adjacent to each other, and directly
connected with short wires.
• Properly installing multi-conductor cabling and multiple wires through strain-relief fittings. (Over-tightening of a strain-relief can cause
short circuits at that point.)
• Using positive-opening components as described by IEC 60947-5-1 that are installed and mounted in a positive mode.
• Periodically checking the functional integrity / safety function and training operators, maintenance personnel, and others associated
with the operation of the machine to recognize and immediately correct such failures.
If you have any questions about your intended use, please contact a Banner applications engineer.
Connection of Multiple Switches
Connect the poles of multiple switches, such as e-stop switches, as shown
in the figure at right. The switches are shown in the "armed" position with
both contacts closed. Multiple switches connected to one Safety Module
must be series connected (see figure at right and the warning, Multiple
Switching Devices).
S12 S22 S11 S21
E-Stop E-Stop
Figure 2. Series Connection of Multiple E-stop
Switches
WARNING: Multiple Switching Devices
Whenever two or more devices are connected to the same safety module (controller):
• Contacts of the corresponding pole of each switch must be connected together in series. Never
connect the contacts of multiple switches in parallel. Such a parallel connection defeats the switch
contact monitoring ability of the Module and creates an unsafe condition which could result in serious
injury or death.
• Each device must be individually actuated (engaged), then released (or re-armed) and the safe-
ty module reset. This allows the module to check each switch and its wiring to detect faults.
This check must be performed during the prescribed checkouts. Failure to test each device individually
in this manner could result in undetected faults and create an unsafe condition which could result
in serious injury or death.
ES-FA-9AA and ES-FA-11AA E-Stop Safety Modules
P/N 060606 Rev. F www.bannerengineering.com - tel: 763-544-3164 5