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MN-3257/MN-3257T
Distributed Motionnet 32-ch Isolated DO Module
 
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Model: MN-3257
 
Model: MN-3257T
Maximum communication speed: 20 Mbps
32 isolated digital outputs
Each Motionnet transfer line: connect modules up to 64
Designing isolation protection: power, communication, I/O
LED diagnostics for communication and I/O status
The internal flywheel diode of each output ports can be connect to different sources of power individually.
High current sinking capability (200 mA)
 
 
The MN-3257(T) is an I/O expansion device for Motionnet systems, and is equipped with 32 isolated digital output channels. Each Motionnet communication line can be connected to up to 64 modules, meaning that the I/O can be expanded to 2048 output channels. The communication time required by each MN-325x is 15.1 us. If 64 modules have been connected, signals for 2048 points on 64 modules can be sent and received within 0.97 msec. The update of the I/O status is completed automatically through the Motionnet system at a constant interval, and setting interrupts for specific input points that the customer wants to monitor can help prevent CPU time from being wasted by repetitive polling when there is nothing else for the issuing process to do. The internal flywheel diodes of each output port can be individually connected to different sources of power (each port is comprised of 8 I/O signals).
 
Digital Output
Output Channels 32
Output Type Open Collector (Sink), with internal flywheel diode
Load Voltage +30 VDC max.
Load Current 200 mA max. for each channel
Isolation Voltage 3000 Vrms
Interface
LED Indicators Communication state (Link, Error)
Input/output state
Internal 3.3 V Power
Termination resistor switch
Communication Speed Selectable 2.5, 5, 10 or 20 Mbps by DIP Switch
Cyclic scan time 15.1 µs per device (20 Mbps)
Communication Connector MN-3257: RJ-45 x 2
MN-3257T: 5-pin terminal block
I/O Connector 13-Pin pluggable terminal block x4
Power
Voltage Range 24 VDC (1000 V isolated)
Power Consumption 2 W max.
Protection Reverse voltage and overcurrent protection
Connection 7-Pin removable terminal block
Mechanical
Case Plastic
Dimensions (W x L x H) 31 mm x 140 mm x 126.6 mm
Installation DIN-Rail Mounting
Environment
Operating Temperature 0 °C ~ + 60 °C
Storage Temperature -20 °C ~ +80 °C
Operating Humidity 10 ~ 85%, Non-condensing
Storage Humidity 5 ~ 95% RH, Non-condensing
 
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