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Concept

Concept


Products: DO-FA-12
Functionalities: Hardware
Product version: 2.0, 2.1, 3.0, 3.1, 3.2
3/31/2022

DO-FA-12 and DO-FA-12-H I/O Modules

arrow1_rotationDigital outputs arrow1_rotationSpecifications

The DO-FA-12 I/O module is a 12-channel, Form A relay, digital output I/O module.

Note:

Module names with an -H indicate the presence of Hand-Off-Auto override switches.

Note:

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.

 
action_zoom_plus_stroke DO-FA-12-H I/O Module
Figure: DO-FA-12-H I/O Module

Digital outputs

The Form A digital outputs of the DO-FA-12 and DO-FA-12-H I/O modules are normally open contacts with one common terminal (C) and one normally open terminal (NO). The terminals are isolated from signal ground.

 
action_zoom_plus_stroke Form A digital output internal configuration
Figure: Form A digital output internal configuration

The I/O bus in the terminal base provides the I/O 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 I/O module and the SmartX 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.)
 
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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
 
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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

See Also

  • I/O Modules
  • Output Modules
  • Important Information on Central IO Modules with Manufacturing Date Earlier Than 2021-W26