Preliminary—This information may change.
10
Miscellaneous—Emergency Telephone Stations (AFAWS-Series)
B+ A+ A- B- B+ A+ A- B-
B+ A+ A- B- B+ A+ A- B-
Afawvcm4
NFPA Style Z
AUX SW
Ti
p
Ri
ng
T
ip
out
R
ing
out
Co
m
O
n
hook
O
ff hook
AUX SW
Ti
p
Ri
ng
T
ip
out
R
ing
out
Co
m
O
n
hook
O
ff hook
Form-C
Hook-Switch Activated
Dry Contact
(1A 30 V
)
RMS
NFPA Style Y
4.7K 0.5W ELR
Part Number 71252
(See Note 4, Below)
Terminate each
unused circuit
with 4.7K 0.5W ELR
Part Number 71245.
Activated
Polarity
Shown
VCM-4
VCM-4
Typical Telephone Circuits
Telephone Power
Polarity (from FFT-7/S)
A
B
C
D
E
F
G
H
SPEAKER
CIRCUITS
SPEAKER
CIRCUITS
A
B
C
D
Figure 3: AFAWS Series Telephone to VCM-4 Circuit
Connections
Notes: Telephone circuits are supervised and power-limited.
Twisted pair shielded cable should be used for telephone circuit
wiring. For best operation, terminate shield at FFT-7/S 24V power
supply common (-).
Maximum telephone circuit wire resistance is 40 ohms.
For ELR connection to devices with terminals, use Resistor 71252.
For ELR connection to devices with flying leads, use
Resistor 71245. In Canada, N-ELR Resistor Assembly is required.
Refer to the fire panel manual for UL power-limited requirements
and further information.
Содержание AFAWS FFT-7
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