Maple Armor FW105 - MFU (Multi-Functional Unit); Figure 7 MFU (Multi-Functional Unit)

Installation and Operation Manual
11
MFU (Multi-functional Unit)
MFU is a multi-functional unit that includes 4 NACs, 1 SLC, 4 Relays Outputs, and 2 network circuits. It is a fixed
unit for FW105.
24V input
and CAN bus
ISU setting switch
Network
(class X)
Network
(class B)
Relay Outputs
SLC
NACs
Figure 7 MFU (Multi-functional Unit)
Caution: Set correctly on ISU setting switch for proper operation
 Switch terminal 1 and terminal 2 to ON position, and switch terminal 3 and terminal 4 to OFF position when ISU
is installed on the left slot.
 Switch terminal 1 and terminal 2 to OFF position, and switch terminal 3 and terminal 4 to ON position when ISU
is installed on the right slot.
 Switch terminal 1, terminal 2, terminal 3 and terminal 4 to ON position when no ISU is installed.
 Switch terminal 1, terminal 2, terminal 3 and terminal 4 to OFF position when two ISUs are installed.
1) NAC (Notification Appliance Circuit)
 MFU contains four independent notification appliance circuits.
 Circuit topology support: Class A or Class B.
 Maximum current: 2A per NAC, 10A maximum for all NACs (4 NACs on MFU + 4 NACs on NOU)
2) SLC (Signaling Line Circuit)
 MFU contains one SLC supports up to 252 points of addressable devices.
 Initializes and operates all devices residing on the loop and communicates all relevant devices and
event information, such as alarms and troubles, to the System CPU.
 Circuit topology support: Class A/DCLA or Class B/DCLB.
 Maximum current: 100 mA in Normal Standby, 220 mA in Alarm