Siemens 6ES7322-1HH01-0AA0
Siemens 6ES7322-1HH01-0AA0
Siemens 6ES7322-1HH01-0AA0
Siemens 6ES7322-1HH01-0AA0
Siemens 6ES7322-1HH01-0AA0
Siemens 6ES7322-1HH01-0AA0
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6ES7322-1HH01-0AA0

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Siemens 6ES7322-1HH01-0AA0 is a SIMATIC S7-300 SM 322 module with sixteen relay outputs arranged in two isolated groups.
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Technical specifications for 6ES7322-1HH01-0AA0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7322-1HH01-0AA0
  • Product Family:
    Siemens Simatic S7-300
  • Product Type:
    SIMATIC S7-300 SM 322 Relay Digital Output Module
  • Stock:
    1
  • Digital Outputs:
    16 relay contacts
  • Output Groups:
    2 isolated groups of 8
  • Rated Contact Current:
    2 A per output
  • Minimum Load Current:
    10 mA
  • Resistive Switching Frequency:
    Up to 1 Hz
  • Inductive Switching Frequency:
    Up to 0.5 Hz
  • Mechanical Switching Frequency:
    Up to 10 Hz
  • Maximum Lamp Load:
    50 W at 230 V AC
  • Maximum Group Current:
    8 A
  • Relay-Coil Supply:
    24 V DC
  • Maximum Supply Current:
    250 mA
  • Maximum Backplane Current:
    100 mA at 5 V DC
  • Typical Power Loss:
    4.5 W
  • Maximum Shielded Cable Length:
    1000 m
  • Maximum Unshielded Cable Length:
    600 m
  • Isolation Test Voltage:
    1500 V AC
  • Required Front Connector:
    20-pin
  • Channel Diagnostics:
    Not provided
  • DC Load Voltage:
    120 V DC rated
  • AC Load Voltage:
    230 V AC rated
  • Output Isolation:
    Channels isolated in two groups of eight and isolated from the backplane
  • Weight:
    0.609 lbs (0.276 kg)
  • Estimated shipping dimensions:
    15.3x12.8x5.2cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Relay Groups Load Limits Wiring Status Checks

Features:

  • Sixteen relay contacts switch supported AC or DC loads from S7-300 output commands.
  • Two isolated groups of eight organize the field circuits and their total current.
  • Channel LEDs show commanded states, while field protection and fault checking remain external.
Siemens 6ES7322-1HH01-0AA0 transfers controller output bits to mechanical relay contacts.

The two groups inside 6ES7322-1HH01-0AA0 separate field circuits from one another and from the backplane.

Load type and switching duty determine the usable contact behavior of 6ES7322-1HH01-0AA0.
Siemens 6ES7322-1HH01-0AA0 SIMATIC S7-300 SM 322 Relay Output Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Output Group Structure

  • Channels 0–7: The first eight contacts form one isolated output group.
  • Channels 8–15: The second eight contacts form the other isolated output group.
  • Group current: Each group must remain within its documented total-current limit.
  • Backplane isolation: Optocouplers separate the output groups from the S7-300 backplane electronics.

Contact Duty by Load Type

  • Resistive loads: The resistive switching rate follows the documented one-hertz limit.
  • Inductive loads: Coils and contactors use the lower switching-frequency boundary.
  • Lamp loads: Inrush and power must remain within the stated lamp-load limit.
  • Contact life: Voltage, current, load type, and switching frequency together determine operating cycles.

Field Connection Boundaries

  • Front connector: The twenty-pin connector carries the relay-group field wiring.
  • Coil supply: The relay coils use the documented 24 V DC supply path.
  • External protection: Branch fusing and load protection are required because outputs are not short-circuit protected.
  • Commissioning: Confirm group commons, field voltage, polarity where relevant, and the load on every channel.

Commanded State and Field Verification

  • Channel LEDs: A lit output LED reports the commanded state rather than confirmed field current.
  • No wire-break diagnosis: An open field circuit does not create a channel diagnostic from this module.
  • No fuse indication: External protective-device status must be inspected separately.
  • Fault isolation: Compare the CPU output bit, channel LED, contact continuity, field voltage, and load response in sequence.
Description
Siemens 6ES7322-1HH01-0AA0 is a SIMATIC S7-300 SM 322 digital output module with sixteen relay contacts. Controller output bits energize the relay coils, and the contacts then switch supported AC or DC field circuits through the twenty-pin front connector.

The outputs of 6ES7322-1HH01-0AA0 are divided into two isolated groups of eight. Each group can carry its documented total current while remaining isolated from the backplane through optocouplers, allowing two organized field-power sections within one module.

Because 6ES7322-1HH01-0AA0 uses mechanical relays, resistive, inductive, and lamp loads have different switching-frequency and contact-life limits. A circuit that is acceptable at steady current can still exceed the permitted switching duty if a contactor or lamp is cycled too quickly.

Channel LEDs on 6ES7322-1HH01-0AA0 indicate commanded output states, but the module does not provide channel diagnostics, wire-break monitoring, fuse indication, or short-circuit protection. External branch protection and field-side voltage checks therefore remain part of commissioning and fault isolation.
Alternative Names
6ES73221HH010AA0 6ES7322 1HH01 0AA0 6ES 7322 1HH01 0AA0 Siemens 6ES7322-1HH01-0AA0 6ES7322-1HH01-0AA0 SM 322 6ES7322-1HH01-0AA0 Relay Output Module 6ES7322-1HHO1-0AAO 6ES7322-IHH01-0AA0
Technical notes
Load current, switching duty, group current, and external protection must all be checked before 6ES7322-1HH01-0AA0 energizes a relay circuit.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why is the LED on 6ES7322-1HH01-0AA0 lit while the field device remains off?
Check the 6ES7322-1HH01-0AA0 relay contact, group field voltage, front-connector terminals, external fuse, load wiring, and device return path.
Can 6ES7322-1HH01-0AA0 switch AC and DC loads in the same module?
The two groups of 6ES7322-1HH01-0AA0 are isolated, but each circuit must satisfy its voltage, current, group-current, wiring, and protection limits.
Why does a relay on 6ES7322-1HH01-0AA0 wear out quickly?
Review the 6ES7322-1HH01-0AA0 load type, inrush current, switching frequency, inductive suppression, contact rating, ambient conditions, and operating-cycle limit.
Why does 6ES7322-1HH01-0AA0 not report a broken load wire?
The 6ES7322-1HH01-0AA0 provides output-state LEDs but no wire-break or channel diagnostic function, so field continuity must be checked externally.
What should be checked before replacing 6ES7322-1HH01-0AA0?
Record the 6ES7322-1HH01-0AA0 group commons, AC or DC voltages, channel-to-load wiring, protective devices, connector assignment, and configured output addresses.
Why do several outputs on one group of 6ES7322-1HH01-0AA0 fail together?
Inspect the 6ES7322-1HH01-0AA0 group supply, common terminals, connector seating, external fuse, total group current, and field return before testing individual relays.