ES-FA-11AA BANNER ENGINEERING, ES-FA-11AA Datasheet - Page 10

• Manufacturer Part Number: ES-FA-11AA
• Description: 98H7885
• Manufacturer: BANNER ENGINEERING

Specifications of ES-FA-11AA

• Coil Voltage Vac Nom: 24V
• Coil Voltage Vdc Nom: 24V
• Contact Current Max: 7A
• Contact Voltage Ac Nom: 250V
• Contact Voltage Dc Nom: 250V
• No. Of Poles: 2
• Relay Mounting: DIN Rail
• External Height: 80mm

Connection to the Machine to be Controlled
The hookup diagrams show a generic connection of the Safety Module's redundant output circuits to the master
stop control elements (MSCs). An MSC is defined as an electrically powered device, external to the Safety Module,
which stops the machinery being controlled by immediately removing electrical power to the machine and (when
necessary) by applying braking to dangerous motion. This stopping action is accomplished by removing power to
the actuator of either MSC.
External Device Monitoring
To satisfy the requirements of Control Reliability (OSHA and ANSI), Category 3 and 4 of ISO 13849-1 (EN 954-1),
the master stop control elements (MSCs) must each offer a normally closed, forced-guided (mechanically linked)
monitor contact. Connect one normally closed monitor contact from each master stop control element in series to
S33-S34 in Auto Reset mode and to S11-S33 in Manual Reset mode (see single-channel hookup drawings).
In operation, if one of the switching contacts of either MSC fails in the energized condition, the associated monitor
contact will remain open. Therefore, it will not be possible to reset the Safety Module. If no MSC-monitor contacts
are monitored, a jumper must be installed between terminals S33 and S34, as shown in the hookup drawings. It is
the user's responsibility to ensure that any single failure will not result in a hazardous condition and will
prevent a successive machine cycle.
Overvoltage Category II and III Installations (EN 50178 and IEC 60664-1)
The Safety Module is rated for Overvoltage Category III when voltages of 1V to 150V ac/dc are applied to the output
relay contacts. It is rated for Overvoltage Category II when voltages of 151V to 250V ac/dc are applied to the output
relay contacts and no additional precautions are taken to attenuate possible overvoltage situations in the supply
voltage. The Module can be used in an Overvoltage Category III environment (with voltages of 151V to 250V ac/dc)
if care is taken either to reduce the level of electrical disturbances seen by the Module to Overvoltage Category II
levels by installing surge suppressor devices (e.g., arc suppressors), or to install extra external insulation in order
to isolate both the Safety Module and the user from the higher voltage levels of a Category III environment.
For Overvoltage Category III installations with output contact voltage 151V to 250V ac/dc applied to the
output contact(s): the Safety Module may be used under the conditions of a higher overvoltage category where
appropriate overvoltage reduction is provided. Appropriate methods include:
Auxiliary Monitor Contact (Model ES-FA-11AA Only)
The action of the auxiliary monitor contact, terminals 31-32, inversely "follows" the action of the safety outputs. The
31-32 auxiliary monitor contact is to be used only for control functions that are NOT safety-related. A typical
use is to communicate the status of the Safety Module output to a programmable logic controller (PLC).
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NEVER wire any intermediate device(s) (e.g., PLC, PES, PC), between the Safety Module outputs and the
master stop control element (MSC) it switches, in such a manner that in the event of a failure there is the
loss of the safety stop command, OR in such a manner that the safety function can be suspended, overrid-
den, or defeated, unless accomplished with the same or greater degree of safety. Whenever forced-guided,
mechanically linked relays are added as intermediate switching devices, a normally closed forced-guided monitor
contact from each relay must be added to the series feedback loop between Safety Module terminals S31 and
S32.
An overvoltage protective device
A transformer with isolated windings
A distribution system with multiple branch circuits (capable of diverting energy of surges)
A capacitance capable of absorbing energy of surges
A resistance or similar damping device capable of dissipating the energy of surges
WARNING . . . Interfacing MSCs
Banner Engineering Corp. - Minneapolis, MN USA - www.bannerengineering.com
Tel: [phone]
ES-FA-9AA / ES-FA-11AA E-Stop Safety Modules
P/N 060606 rev. E