ES-FA-9AA BANNER ENGINEERING, ES-FA-9AA Datasheet - Page 3

• Manufacturer Part Number: ES-FA-9AA
• Description: Module; Relay; Red LED; 24; UL Listed
• Manufacturer: BANNER ENGINEERING

Specifications of ES-FA-9AA

• Light Source: Red LED
• Coil Voltage Vac Nom: 24V
• Coil Voltage Vdc Nom: 24V
• Contact Current Max: 6A
• Contact Voltage Ac Nom: 250V
• Contact Voltage Dc Nom: 250V
• Contact Configuration: 3PST-NO
• No. Of Poles: 3
• Lead Free Status / Rohs Status: RoHS Exempt Product

Figure 1. ES-FA-9AA status indicators
Banner Engineering Corp.
Power ON LED
K1 Energized
K Energized
www.bannerengineering.com • Tel: [phone]
Input
ES-FA-9AA
A1
Machine
14
Safety
S1
S
CH.
CH.
•
Minneapolis, MN U.S.A.
1
4
Power
S
S4

4
1

K1
K
S11
S1

A
The purpose of an Emergency Stop Safety Module (E-Stop Safety Module) is to increase
the control reliability of an emergency stop circuit. As indicated in Figures 2 and 3, the
ES-FA-9AA E-Stop Safety Module is designed to monitor a 1-channel or 2-channel E-stop
switch. A 2-channel E-stop switch has two electrically isolated contacts.
ISO 1849-1 Safety Categories
Both contacts of a 2-channel E-stop switch are monitored by the Safety Module. If either
input is short-circuited, the Safety Module cannot be reset, and the controlled machinery
cannot be restarted, following actuation of the E-stop switch. Two-channel E-stop switches
used with this Safety Module are suitable for Safety Category 4 applications, per European
Standard ISO 13849-1 (EN954-1), of which Category 4 is the highest safety category.
Use of a 1-channel E-stop switch provides no input redundancy, and no ability for the Safety
Module to monitor for input short circuits. One-channel E-stop switches used with this
Safety Module are generally suitable only for Safety Category 2 applications, per
ISO 13849-1 (EN954-1).
IEC/EN6004-1 and NFPA79 Functional Stop Categories
In a functional Category 0 emergency stop circuit, the opening of either of the two E-stop
switch contacts (or the one contact, if configured to 1-channel) immediately removes
electrical power from the machine control elements, which react to stop hazardous machine
motion and/or other machine hazards. This redundancy of stopping control offered by a
two-pole E-stop switch is the first step towards control reliability in an emergency stop
circuit.
The output of the E-Stop Safety Module ES-FA-9AA consists of three redundant output
switching channels, each of which is the series connection of two forced-guided relay
contacts that are internally monitored (K1 and K2 in Figure 2). If the Module detects a
failure, such as a welded output relay contact, all outputs are disabled and cannot be reset.
The four switching output circuits of the E-Stop Safety Module are rated for up to 250V ac
at up to 6 amps.
The E-Stop Safety Module also provides a necessary reset function. U.S. and international
standards require that a reset routine be performed after returning the
E-stop switch to its closed-contact position. This prevents the controlled machinery from
restarting by simply closing the E-stop switch. The Module may also be configured for
automatic reset (see Figures 2 and 3). The automatic reset mode is useful for some
automated processes. However, when automatic reset is used, an alternate means must
be established to require a reset routine after the E-stop switch is returned to its closed
contact position (see WARNING on page 8).
This E-Stop Safety Module complies with the following design standards:
UL991
ISO 13850
ISO 13849-1
The Safety Module has indicators for input power, fault, and output relay contact status (K1
and K2); see Figure 1. There are no adjustments and no user-serviceable parts. See page 10
for information regarding repair service.
Tests for Safety Related Control Employing Solid-State Devices
Emergency Stop Equipment - Functional Aspects, Principals for Design
Safety of Machines: Safety Related Parts of Control Systems
Part 1: General Design Directives (Safety Category 4)
E-Stop Safety Module –
Description
ES-FA-9AA
P/N 60606 rev. B