10
Installation and Maintenance Instructions
Model E1 Intercom Station
To install the Model E1 intercom:
1.
Access to internal wiring:
See Figure 1 on page 9. Remove the
12 M8 stainless-steel screws securing the cover to the enclosure
and carefully lift the cover. Note that the cover is attached with
a bonding wire to secure it to the enclosure as well as to provide
strain relief for the internal wiring.
2.
Conduit entrances:
See Figure 2. The Model E1 has three
conduit/cable entrances for field wiring. Entries can be used
for connection of data/power from the Central Control,
external loudspeaker connections, or relay output connection.
Figure 2 Wiring diagram
290A7477
DATA/POWER LINES
FROM ECHO
CENTRAL CONTROL
(ISDN)
(N)
(N)
(L)
(L)
RELAY OUTPUT
(240 V, 3 A MAX.)
AUX. POWER FOR SPEAKER
(240 V, 20 A MAX.)
AUDIO LINES TO
CONNECTOR CARD T-300CK
ON FS POWERED SPEAKER
NOTE:
The internal grounding terminal shall be used as the
grounding equipment means. The external terminal is only
a supplemental bonding connection where local authorities
permit or require such a connection.
3.
Terminals:
For field wiring, the Model E1 has a series of DIN
rail terminal blocks with these connections (see Figure 2):
✓
Relay output: 18-12 AWG (0.75 – 4 mm
2
), tightening torque
✓
0.4 N
•
m (3.4 in-lb), 240 Vac, 3.0 A max.
✓
Audio/ISDN: 26-12 AWG (0.25 – 4 mm
2
), Cu conductors
only
