Honeywell NOTIFIER NFC-50/100 Instruction Manual page 15

Input/Output Circuit Specifications
External Audio Riser TB22, Terminals 1 (OUT+), 2 (OUT-), 4 (IN+), 5 (IN-), & 3 (SHLD)
Style Y (Class B) or Style Z (Class A) audio connections to external operator interface components
Power-limited (Class 2) circuitry, supervised
Audio signal level: 3.85 V
Frequency range: 800 - 2,800 Hz
Frequency range (NFC-50/125DA): 800 Hz - 2.8 KHz
NOTE: Zero impedance to ground will cause a ground fault.

Current Availability
The following figures illustrate the maximum current allowed for each output circuit in the panel and the total output current available
from the power supply. Refer to Section 6, "Power Supply Calculations" for additional current draw by option cards that must be consid-
ered when determining total standby and alarm currents.
TB20
Primary 50W
50W max = 3.3
Speaker Circuit
amps from supply
TB21
Secondary 50W
50W max = 3.3
Speaker Circuit-
amps from supply
Optional Amplifier
Installed
TB24
External Operator
0.8 amp max.
Interface Power
TB17
Aux. Power
0.5 amp max.
TB19
2.0 amps max.
NAC Circuit
TB23
Speaker Volume
0.25 amp max.
Control Override
Notifier FirstCommand Series Manual — P/N LS10001-001NF-E:H 1/8/2018
, maximum
RMS
Figure 1.1 Current Availability - 100 Watt System
Alarm
7.5 amps
max.
TB20
Primary 50W
Speaker Circuit
combined 10W
max = 0.66 amps
TB21
Secondary 50W
Speaker Circuit-
Optional Amplifier
Installed
TB24
External Operator
0.8 amp max.
Interface Power
TB17
Aux. Power
0.5 amp max.
Product Description
from supply
2.0 amps max.
background music).
Standby
(includes
15