Manual

EM-FD-7G Series Safety Extension Modules – Delayed Output
One-channel control with four delayed safety output channels
Printed in USA P/N56968
Features
• Safety Extension Module provides additional safety outputs for a Primary Safety
Device (for example, an E-stop safety module or a two-hand control module)
• Features four delayed 6-amp switching channels for connection to control-reliable
machine power interrupt circuits
• For use in functional controlled stop category 1 applications per NFPA 79 and EN418
• Contact status outputs are provided for connection to the Primary Safety Device’s
monitoring input
• 24V ac/dc operation
• Housed in a narrow, 22.5 mm (0.9") DIN-rail-mountable module
• Design complies with standards UL 991 and EN 60204
Description
EM-FD-7G Series Safety Extension Modules provide additional forced-guided
(positive-guided) relay contacts for a Primary Safety Device, such as an E-stop relay
or a two-hand control module. Controlled by a safety output of the Primary Safety
Device, the Extension Module provides four safety outputs. These outputs may be
connected to control-reliable machine power interrupt circuits. Each of the four
Extension Module safety outputs is a series connection of two forced-guided relay
contacts.
The EM-FD-7G Series is available in three models with varying OFF delays:
Models Delay OFF
EM-FD-7G2 0.5 Second
EM-FD-7G3 1 Second
EM-FD-7G4 2 Seconds
The safety outputs of the Safety Extension Module follow the action of the safety
output from the Primary Safety Device which controls it, with a switching delay time
as noted above. The output delay permits dynamic motor braking typical of variable
frequency motor drives and servo motor controllers. The Extension Module’s four
safety outputs are each rated for up to 250V ac/dc at up to 6A.
The Safety Extension Module offers an output circuit at terminals Y1 and Y2 which
provides K1 and K2 contact status information for connection to the monitoring input
of the Primary Safety Device (see Figure 3). This monitoring circuit prevents the
Primary Safety Device from being reset if contacts of either K1 or K2 of the Extension
Module fail in a shorted condition.
The Safety Extension Module has indicators for input power (green), and status of
internal relays (K1 and K2, both green) (see Figure 1). There are no adjustments and
no user-serviceable parts. See page 6 for information regarding repair service.
WARNING . . .
These Safety
Extension Modules
are not point-of-
operation guarding
devices, as defined by OSHA
regulations. It is necessary to
install point-of-operation guarding
devices, such as safety light
screens and/or hard guards, to
protect personnel from hazardous
machinery. Failure to install
point-of-operation guards on
hazardous machinery could lead
to serious injury or death.
!
p/n 56968 Rev. A
Feb 2013