Ch apte r 4 X20 m odu le 18.8 DO4331
18.8.1 General information
The DO4331 module is equipped with four outputs for 3-wire connections. The rated output current is 2.0 A.
• 4 digital outputs with 2 A
• Sink connection
• 3-wire connection
• 24 VDC and GND for actuator supply
• Integrated output protection
18.8.2 Order data
Model number Short description Figure
Digital output module
X20DO4331 X20 digital output module, 4 outputs, 24 VDC, 2.0 A, sink, 3-wire connections
Required accessories
X20TB12 X20 terminal block, 12-pin, 24 V coded X20BM11 X20 bus module, 24 V coded, internal I/O supply is
interconnected
Table 407: DO4331 - Order data
18.8.3 Technical data
Product ID DO4331
Short description
I/O module Four 24 VDC digital outputs for 3-line connections
Digital outputs
Rated voltage 24 VDC
Rated output current 2.0 A
Total current 8.0 A
Connection type 3-line connections
Output circuit Sink
Output protection Thermal cutoff for overcurrent and short circuit, integrated protection for switching inductances Additional functions for outputs To increase the output current, outputs can be switched in parallel
Actuator supply 0.5 A in total for output-independent actuator supply
General information
Status indicators I/O function per channel, operating state, module status
Diagnostics Module run/error Outputs
Yes, with status LED and software status Yes, with status LED and software status (output error status) Electrical isolation
Channel - Bus Channel - Channel
Yes No Power consumption
Bus I/O internal
0.16 W 0.49 W
Certification CE, C-UL-US, GOST-R
Operating conditions Operating temperature Horizontal installation Vertical installation
0°C to +55°C 0°C to +50°C
Relative humidity 5 to 95%, non-condensing
Mounting orientation Horizontal or vertical
Installation at altitudes above sea level 0 - 2000 m
>2000 m
No derating
Reduction of ambient temperature by 0.5°C per 100 m
Protection type IP20
Storage and transport conditions
Temperature -25°C to +70°C
Relative humidity 5 to 95%, non-condensing
Mechanical characteristics
Spacing 12.5 +0.2 mm
Comment Order 1x X20TB12 terminal block separately
Order bus module 1x X20BM11 separately Table 408: DO4331 - Technical data
Ch apte r 4 X20 m odu le 18.8.4 Additional technical data
Product ID DO4331
Actuator supply
Voltage Module supply minus voltage drop for short circuit protection
Voltage drop for short circuit protection at 500 mA
Max. 2 VDC
Short circuit protection Yes
Power consumption
Actuator supply Max. 12.0 W 1)
1) The power consumption of the sensors connected to the module may not exceed 12 W.
Digital outputs
Design FET negative switching
Switching voltage 24 VDC (-15% / +20%)
Diagnostics status Output monitoring with 10 ms delay
Leakage current when switched off 75 µA
Residual voltage <0.15 V @ 2.0 A rated current
Short circuit peak current <24 A
Switching on after overload or short circuit cutoff
Approx. 10 ms (depends on the module temperature) Switching delay
0 1
1 0 <300 µs
<500 µs Switching frequency
Resistive load Inductive load
Max. 500 Hz
See the section 18.8.9 "Switching inductive loads" on page 644 (at 90% duty cycle) Braking voltage when switching off
inductive loads
Typ. 50 VDC
Isolation voltage betw. channel and bus 500 Veff
General information
B&R ID code $22B5
Table 409: DO4331 - Additional technical data
18.8.5 Status LEDs
Figure LED Color Status Description
r Green Off Module supply not connected
Single flash Reset mode Blinking Preoperational mode
On RUN mode
e Red Off Module supply not connected or everything is OK
Single flash Warning / error for an I/O channel. Level monitoring for digital outputs has been triggered.
e + r Steady red / single green flash
Invalid firmware
1 - 4 Orange Output status of the corresponding digital output Table 410: DO4331 - Status indicators
Ch apte r 4 X20 m odu le 18.8.6 Pin assignments
18.8.7 Connection example
Figure 286: DO4331 - Pin assignments
Figure 287: DO4331 - Connection example
1
X20DO4331X20DO4331 2
DO 1 +24 VDC
GND
DO 2 +24 VDC
GND DI 1
Geber 1 24V+
GND
DI 2 Geber 2 24V+
GND DO 3
+24 VDC GND
DO 4 +24 VDC
GND
3 4 3 4 re
GND +24 VDC
GND +24 VDC
DO
Actuator1 Actuator2Actuator4
Actuator3
18.8.8 Output circuit diagram
18.8.9 Switching inductive loads
Figure 288: DO4331 - Output circuit diagram
Figure 289: DO4331 - Switching inductive loads Logic
Low-Side
24 V
GND GND
VDR
Output x
24 V GND 24 V
I/O status LED (orange)
Output monitoring Output status
PTC
GND
GND
12
0.1 1 10 100
100 500
Coil resistance
[ ]W Coil inductance
max. operating cycles / second (at 90 % duty cycle)
10 mH 100 mH 1 H 10 H
100 H
Ch apte r 4 X20 m odu le 18.8.10 Operation with 2 A
The DO4331 outputs can handle up to 2 A. To ensure optimal use of the module, it is important to assign the channels properly, and to keep in mind a potential derating.
The following table provides an overview of the number of fully used channels, the resulting best distribution, and a potential derating.
Number of channels using 2 A Division Derating
1 Any No
2 Possible distributions:
1, 3 2, 4
No
3 Possible distributions:
1, 2, 4 1, 3, 4
No
4 1 - 4 All channels
Table 411: DO4331 - Operation with 2 A
Modules next to the DO4331 can have a maximum power consumption of 1.5 W.
Figure 290: DO4331 - Derating when 4 channels are operated with 2 A Output current [A]
Ambient temperature [°C]
0 0 1.5 2
40 55
18.8.11 Digital outputs
The output status is transferred to the output channels using a fixed offset to the network cycle.
18.8.12 Output monitoring status
The output states for the outputs are compared to the set values on the module. The control for the output driver is used for the set states.
A change in the output status resets the monitoring for this output. The status of each individual channel can be read. A change in the monitoring status generates an error message.
18.8.13 B&R ID code
Code for module identification ($22B5).
18.8.14 Minimum cycle time
The minimum cycle time is the minimum time needed for the bus cycle to be shut down without a communication error or malfunction occurring. It should be noted that very fast cycles reduce the idle time needed for handling monitoring, diagnostics and acyclic commands.
18.8.15 Minimum I/O update time
The minimum I/O update time refers to the minimum time it takes for the bus cycle to shut down, so that in each cycle an I/O update takes place.
Monitoring status Description
0 Digital output channel: No error
1 Digital output channel: Short circuit or overload
Minimum cycle time 100 µs
Minimum I/O update time Equal to the minimum cycle time
