Input/Initiating Circuits; 1: Cmd Inputs - Honeywell NOTIFIER NFC-50/100 Instruction Manual

Installation

2.5 Input/Initiating Circuits

2.5.1 CMD Inputs
The NFC-50/100 has eight Command Input circuits, which are used to activate the panel amplifiers which, in turn, transmit an audio sig-
nal over the system speakers. All field wiring for the circuits is power-limited (Class 2) and supervised for opens and ground faults. Note
that zero impedance to ground will cause a ground fault.
CMD1 and CMD2 Command Input circuits can be field programmed to be triggered by a contact closure or by the reverse polarity of a
Notification Appliance Circuit. Their configurations can be independently set so that both circuits are triggered by the same type of input
or by different types of inputs. See Figure 2.9 below.
IMPORTANT! When CMD1 and CMD2 are configured for reverse polarity, the NAC cannot be Coded (including NAC Sync).
Note that CMD1 has internal relay contacts in series with its OUT terminals which are used in the reverse polarity configuration to open
the outgoing NAC circuit during an NFC-50/100 trouble condition. In standby, this generates a NAC trouble at the host FACP (feature is
bypassed in alarm condition). These contacts do not open during AC loss at the NFC-50/100, however they are fail-safe, meaning that a
complete loss of power there will open the circuit..
FACP ELR
(for Style Y - Class B only)
NAC reverse polarity trigger
(alarm polarity shown)
CMD3, CMD4, CMD5, CMD6, CMD7, and CMD8 Command Input circuits are triggered by a contact closure only. Each Command
input will activate various messages and amplifiers depending on the Message Control selection configured in user programming (refer
to Section 3).
NOTE: CMD8 cannot be used when the system is programmed to provide more than eight (8) messages.
28
Host FACP
NAC
Style Z (Class A)
TB4
CMD1
NFC-50/100 Main Control Board
Figure 2.9 Command Input Circuits
alarm polarities shown
Class B (Style B) Contact Closure trigger input, such as
an emergency signaling manual pull station (MNS only).
(4.7K, 1/2 watt EOL Resistors P/N: 71252)
TB5
CMD2
Notifier FirstCommand Series Manual — P/N LS10001-001NF-E:H 1/8/2018
TB6 TB7
CMD3,4 CMD5,6
TB8
CMD7,8
Input/Initiating Circuits