Federal Signal Corporation Echo E2 Installation And Service Instructions Manual - page 4
I. INSTALLATION
A.
Unpacking
After unpacking the unit, examine it for damage that may have occurred in
transit. If the equipment has been damaged, do not attempt to install or operate it. File
a claim immediately with the carrier stating the extent of the damage. Carefully check
all envelopes, shipping labels, and tags before removing or destroying them.
B.
General
The equipment comprises a stainless steel enclosure containing a printed cir-
cuit board assembly providing the communications and safety functions. A relay output
module is provided as a standard feature. The relay operates when the intercom is in
ring mode. A single N.O. contact is provided, rated at 240 Vac or 30 Vdc, 3 A max.
This station must be powered from an Echo Central Control. The data/power
is supplied from the Central Control line cards. Please refer to the instructions pro-
vided with the Central Control for full operational details of the Echo system.
C.
Mounting and Wiring
The E2 ECHO intercoms are designed for mounting on a flat horizontal or
vertical surface.
1. Surface Mounting and Wiring Instruction
a. The unit is to be mounted using four user-provided 1/4" (M6) stain-
less steel bolts through the two fixing flanges located on the base enclosure.
b. Remove the enclosure cover by loosening the four captive 1/4" stain-
less steel cover screws.
c.
The cover is fixed to the enclosure with a bonding wire. Bonding
wire will keep the cover attached and provide strain-relief for the internal wiring dur-
ing installation.
d. The unit is provided with three conduit/cable entrances for field
wiring. Entries may be used for connection of data/power from the Central Control,
external loudspeaker connections, or relay output connection.
e.
A series of DIN rail mount terminal blocks are provided for field
wiring. See Figure 1 for wiring diagram. These terminals are rated as follows:
(1). Relay Output: 18-12 AWG (0.75 – 4 mm2), Tightening torque
3.4 in-lb (0.4 Nm), 240 Vac or 30 Vdc, 3 A max.
(2). Aux. Power: 18-12 AWG (0.75 – 4mm2), 240 Vac, 20 A max.
(3). Audio/ISDN: 26-12 AWG (0.25 – 4mm2), Cu conductors only
f.
Upon completion of field wiring, re-fit the cover. Secure the 1/4"
screws to ensure weather/dust tightness.
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