iWorX® ALM2
505-013, Effective: November 12, 2010
11
© 2010 Taco Electronic Solutions, Inc.
Digital Inputs
The contacts for digital inputs may be either normally closed or normally open digital switches. To connect a contact to
the unit, connect one wire from the contact to an input terminal, dry, and the other wire to an adjacent common (T9,
T12, T15, or T18).
Connecting Output Devices
Each output is directly linked to a specific input. The alarm associated with input 1 (if there is to be one) must be con-
nected to the first output, the alarm associated with input 2 must be connected to the second output, etcetera. This is
not configurable.
All eight outputs are triac outputs. The outputs can only switch loads that can be energized by 24
VAC.
If
an
output
is
being used to light an indicator, a 24
VAC lamp must be used. If an output is being used to enable a larger load, the
output must be connected to 24
VAC pilot relays.
Other Connections
Network (LON)
Network wiring must be twisted pair. One network wire must be connected to terminal NETA (T1) and the other network
wire must be connected to terminal NETB (T2). Polarity is not an issue since an FTT-10A network is used for commu-
nications.
Power (PWR)
Connect one output wire from a 24 VAC power supply to PWR (T39) and the other output wire from the power supply to
the adjacent common terminal (T38).
Ground (GND)
Terminal GND
(T40) must be connected to earth ground. Failure to properly ground this equipment will
result in improper operation. Improper grounding may also increase the risk of electrical shock, and may
increase the possibility of interference with radio and TV reception.
SPECIFICATIONS
Electrical
Inputs
• Cabling: twisted shielded pair, 18
AWG
recommended—500
feet max. (152
meters)
• Resolution: 10
bit
Thermistor Inputs
• Precon Type III 10K thermistor
Switch Inputs
• Dry Contact
• Nomally closed or normally open
• 5 Volts
DC
Max
Outputs
• 24
Volts
AC
• 1 Amp @ 50C, 0.5 Amp @ 60C, limited by the Class 2 supply rating
Power
Power Requirements
• 24VAC (20VAC to 28VAC), requires an external Class 2 supply
Power Consumption
• 7.2W with no external loads, maximum limited by the Class 2 supply rating
