Concept
DO-FA-12 and DO-FA-12-H Central IO Modules
The DO-FA-12 and DO-FA-12-H Central IO modules are 12-channel, Form A relay, digital output I/O modules.
Module names with an -H indicate the presence of Hand-Off-Auto override switches.
The override switches on Central IO modules with manufacturing date earlier than 2021-W26 must be disabled to remove the risk of an improper output. For more information, see Important Information on Central IO Modules with Manufacturing Date Earlier Than 2021-W26 .
The front panel includes a dedicated two-color status LED that provides local monitoring of the digital outputs. You can configure the LED to display either red or green for each output state.
DO-FA-12-H Central IO module
Digital outputs
The Form A digital outputs of the DO-FA-12 and DO-FA-12-H Central IO modules are normally open contacts with one common terminal (C) and one normally open terminal (NO). The terminals are isolated from signal ground.
Form A digital output internal configuration
The I/O bus in the terminal base provides the Central IO module with power and an address.
The address value in the I/O bus is increased by one for each terminal base. The I/O bus also enables RS-485 communication between the Central IO module and the automation server.
Specifications
Output channels
|
12
|
DC input supply power
|
1.8 W
|
DC input supply voltage
|
24 VDC
|
| Environment | |
Ambient temperature, operating
|
0 to 50 °C (32 to 122 °F)
|
Ambient temperature, storage
|
-20 to +70 °C (-4 to +158 °F)
|
Maximum humidity
|
95 % RH non-condensing
|
| Material | |
Plastic flame rating
|
UL94-5VB
|
Enclosure
|
PC/ABS
|
Ingress protection rating
|
IP 20
|
| Mechanical | |
Dimensions including terminal base
|
90 W x 114 H x 64 D mm (3.6 W x 4.5 H x 2.5 D in.)
|
|
|
Weight including terminal base
|
0.317 kg (0.70 lb)
|
Weight excluding terminal base
|
0.194 kg (0.43 lb)
|
Terminal base
|
TB-IO-W1
|
| Digital outputs | |
|
|
Contact rating
|
250 VAC/30 VDC, 2 A, Pilot Duty (Power Factor 0.35)
|
Switch type
|
Form A Relay
|
Single Pole Single Throw
|
|
Normally Open
|
|
Isolation contact to system ground
|
3000 VAC
|
Cycle life (Resistive load)
|
At least 100,000 cycles
|
Minimum pulse width
|
100 ms
|
LED polarity energized relay
|
On
|
LED polarity non-energized relay
|
Off
|
LED color
|
Green
|
Central IO Modules
Output Modules
Important Information on Central IO Modules with Manufacturing Date Earlier Than 2021-W26