ES-FA-9AA BANNER ENGINEERING, ES-FA-9AA Datasheet - Page 3
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ES-FA-9AA
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: 763.544.3164
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