SM 321 - Digital input
16x DI
DC 24 V
For 20 pole front connector

SM 321 (321-1BH01)

Technical Data

Order no.: 321-1BH01
Type: SM 321

General Information:

• Note: -
• Features: 16x DI, DC 24 V, for 20-pin front connector
• SPEED-Bus: no

Current Consumption/Power Loss:

• Current consumption from backplane bus: 25 mA
• Power loss: 3.5 W

Technical Data Digital Inputs:

• Number of inputs: 16
• Cable length, shielded: 1000 m
• Cable length, unshielded: 600 m
• Rated load voltage: -
• Current consumption from load voltage L+ (without load): -
• Rated value: DC 20.4...28.8 V
• Input voltage for signal "0 cm ( 0 inch ): DC 0...5 V
• Input voltage for signal "2,5 cm ( 1 inch ): DC 15...28.8 V
• Input voltage hysteresis: -
• Signal logic input: Sinking Input
• Frequency range: -
• Input resistance: -
• Input current for signal "2,5 cm ( 1 inch ): 7 mA
• Connection of Two-Wire-BEROs possible: yes
• Max. permissible BERO quiescent current: 1.5 mA
• Input delay of 0 to 1: 3 ms
• Input delay of 1 to 0: 3 ms
• Number of simultaneously utilizable inputs in horizontal configuration: 16
• Number of simultaneously utilizable inputs in vertical configuration: 16
• Input characteristic curve: IEC 61131-2, type 1
• Input data size: 2 Byte

Status Information, Alarms, Diagnostics:

• Status display: green LED per channel
• Interrupts: no
• Process alarm: no
• Diagnostic interrupt: no
• Diagnostic functions: no
• Diagnostics information read-out: none
• Supply voltage display: none
• Group error display: none
• Channel error display: none

Isolation:

• Between channels: -
• Between channels of groups up to 16: yes
• Between channels and backplane bus: yes
• Insulation tested with: DC 500 V

Datasizes:

• Input bytes: 2
• Output bytes: 0
• Parameter bytes: 0
• Diagnostic bytes: 0

Housing:

• Material: PPE
• Mounting: Rail System 300

Mechanical Data:

• Dimensions (WxHxD): 40 mm x 125 mm x 120 mm
• Net weight: 220 g
• Weight including accessories: -
• Gross weight: -

Environmental Conditions:

• Operating temperature: 0 °C to 60 °C
• Storage temperature: -25 °C to 70 °C

Certifications:

• UL certification: yes
• KC certification: yes