Fire-Lite ECC-50 - Page 15

Emergency Command Center Manual — P/N LS10001-000FL-E:D 9/3/2014 15
Input/Output Circuit Specifications Product Description
Speaker Circuits
Primary Speaker Circuit - TB20, Terminals 1(+) & 2(-) Style Y (Class B), 4(+) & 5(-) Style Z
(Class A), 3 Shield (Standby and Alarm Polarity Shown) on main control board
Secondary Speaker Circuit (with optional amplifier only) - TB21, Terminals 1(+) & 2(-)
Style Y (Class B), 4(+) & 5(-) Style Z (Class A), 3 Shield (Standby and Alarm Polarity Shown) on
main control board
Power-limited (Class 2) circuitry
Operation: Circuit can be wired Style Y (Class B) or Style Z (Class A)
Normal Operating Voltage: 25 V
RMS
@ 2 amps max. and maximum Load Impedance of 12.5
(70.7 V
RMS
@ 700 mA max. with maximum Load Impedance of 100operation possible by plug-
ging optional ECC-XRM-70V conversion transformer into J12 of the main control board).
Output Power: 50 watts, standard; 100 watts with optional amplifier (100 watts total, maximum,
allowed in standby for background music)
Frequency Range: 800 - 2,800 Hz
Maximum total capacitance for each speaker circuit: 250 µF.
End-of-Line Resistor required for Style Y circuit: 15 K, 1 watt (P/N: ELR-15K)
Command Input Circuits (alarm polarities shown)
• CMD1 - TB4 Terminals 3(+) & 4(-) are input terminals and Terminals 1(-) and 2(+) are output
terminals which provide feed through of the NAC circuits to NAC devices downstream;
provides internal trouble relay rated at 3.0 amps maximum
• CMD2 - TB5 Terminals 3(+) & 4(-) are input terminals and Terminals 1(-) and 2(+) are output
terminals which provide feed through of the NAC circuits to NAC devices downstream
• CMD3 - TB6 Terminals 1(+) & 2(-) are input terminals for contact closure only
• CMD4 - TB6 Terminals 3(+) & 4(-) are input terminals for contact closure only
• CMD5 - TB7 Terminals 1(+) & 2(-) are input terminals for contact closure only
• CMD6 - TB7 Terminals 3(+) & 4(-) are input terminals for contact closure only
• CMD7 - TB8 Terminals 1(+) & 2(-) are input terminals for contact closure only
• CMD8 - TB8 Terminals 3(+) & 4(-) are input terminals for contact closure only
Power-limited (Class 2) and supervised circuitry
Normal Operating Voltage Range: 10.5 VDC - 29 VDC; Maximum Voltage: 29 VDC
NAC Reverse Polarity Current (requires End-of-Line Resistor from NAC): 1.6 mA maximum.
Contact Closure Operation Current (requires 4.7K, ½ watt End-of-Line Resistor P/N 27072): 6.6
mA maximum
Maximum Wiring Impedance CMD1 - CMD8 (Contact Closure Operation): 200
Maximum Input Impedance:
• CMD1 & CMD2 (Reverse Polarity Operation): 20K
• CMD1 - CMD8 (Contact Closure Operation): 4.75K
Night Ring Input - TB16, Terminals 1 (+) & 2 (-)
Contact closure input
Isolated, nonsupervised
Operation current: 3.8 mA, maximum
Maximum wiring impedance: 30K 
Minimum isolation withstand voltage: 1500 V
RMS
External Operator Interface Power Output - TB24, Terminals 1 (PWR, +) & 2 (GND, -)
Non-resettable power for external operator interface components
Power-limited (Class 2) circuitry, Supervised
Nominal operating voltage: 24 VDC
Maximum output current: 0.80 amps
Current limit: fuseless, electronic, power-limited circuitry