- Bad communication ports
- Broken selector/key switches
- Dead batteries/Bad Battery connections
- Solid or Blinking RED OK Status Light
- Solid or Blinking RED RUN Status Light
- Solid or Blinking RED Fault Status Light
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Allen Bradley Guard I/O 1791ES and 1791DS Repair
We offer extensive repairs for your Guard I/O 1791ES and 1791DS. We keep many spare parts in stock so that we can repair your Guard I/O 1791ES and 1791DS as efficiently and effectively as possible. Our standard repair lead time is 2-4 weeks. However, we can often repair your unit much faster if necessary. We can repair most issues with your Guard I/O 1791ES and 1791DS and if for some reason we cannot repair your unit we will do our best to offer a refurbished unit at the repair cost, so that you can get a working unit back as soon as possible!
- 2 Year DO Supply Warranty
- Fast repairs at low costs
- No surprises or up-charges for difficult repairs
- Standard lead time of 2-4 weeks
- Extensive quality control and testing
Get a repair quote
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's
warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Hardware issues & error codes we repair
We repair all of the following hardware issues and error codes with your Guard I/O 1791ES and 1791DS parts.
- Bad analog inputs or ouptus
- Bad digital input or outputs
- Bad relays (stuck on/off)
- Incorrect voltages on inputs or outputs
- Incorrect current on inputs or outputs
- DF1, DH-485, DH+, Profibus, Remote I/ (RIO) failures and more!
- Intermittent communication
- Solid RED/Blinkging RED communication lights
- Devicenet, Ethernet, ControlNet, RS232 ports.
- Missing CJC Jumpers
- Incorrect readings
- Failed inputs
- Dead power supplies
- Incorrect voltage
- Broken Plastic
- Poor Connections
- Bad Slots
Browse Guard I/O 1791ES and 1791DS Repairs
Browse our catalog of repairable Guard I/O 1791ES and 1791DS parts to get a quote.
1791DS-IB12
COMPACTBLOCK GUARD I/O DeviceNet Safety Module Allen Bradley Module AB with 12 Single-Channel Inputs. Surplus and Used in Stock!
Available
1791DS-IB16
COMPACTBLOCK GUARD I/O DeviceNet Safety Module Allen Bradley Module AB with 16 Single-Channel Inputs. Surplus and Used in Stock!
In Stock Ships Today
1791DS-IB4XOW4
COMPACTBLOCK GUARD I/O DeviceNet Safety Module Allen Bradley Module AB with 4 Single-Channel Inputs and 4 Current Sourcing Outputs. Surplus and Used in Stock!
In Stock Ships Today
1791DS-IB8XOB8
COMPACTBLOCK GUARD I/O DeviceNet Safety Module Allen Bradley Module AB with 8 Single-Channel Inputs and 8 Current Sourcing Outputs. Surplus and Used in Stock!
In Stock Ships Today
1791DS-IB8XOB8E
This safety input module supports mounting and operates under the T4 temperature code. It can withstand temperatures from 14°F to 131°F, with similar limits for storage conditions. The module maintain
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1791DS-IB8XOBV4
COMPACTBLOCK GUARD I/O DeviceNet Safety Module Allen Bradley Module AB with 8 Single-Channel Inputs and 4 Current Sourcing/Current Sinking Pair Outputs. Surplus and Used in Stock!
In Stock Ships Today
1791ES-IB16
COMPACTBLOCK GUARD I/O EtherNet/IP Safety Module Allen Bradley Module AB with 16 Single-Channel Inputs. Surplus and Used in Stock!
In Stock Ships Today
1791ES-IB8X0BV4
This digital I/O device supports current sinking inputs across 8 channels and features dual-channel bipolar outputs. Functioning with a power supply of 24 VDC, it requires a mounting enclosure rated a
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1791ES-IB8XOBV4
COMPACTBLOCK GUARD I/O EtherNet/IP Safety Module Allen Bradley Module AB with 8 Single-Channel Inputs and 4 Current Sourcing/Current Sinking Pair Outputs. Surplus and Used in Stock!
In Stock Ships Today
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About Guard I/O 1791ES and 1791DS
The Guard I/O 1791ES and 1791DS module series is a series of Allen-Bradley Guard I/O Ethernet/IP and DeviceNet safety modules that help to implement CIP safety protocol extensions over the DeviceNet and Ethernet/IP networks. In addition to providing fail-safe communication between safety devices and controllers on the DeviceNet/Ethernet network that meets safety requirements up to Safety Integrity Level 3 (SIL 3), the Guard I/O 1791ES and 1791DS module series devices can be used to design and create safety-control systems for the processing and communication of safety data on both networks. The Guard I/O 1791ES and 1791DS modules are DC powered devices with an input range of 18 to 30 Volts DC, and a maximum current rating of 8 Amps. These devices have current sinking-type safety inputs that serve as interfaces for emergency stop pushbuttons, gate switches, and safety light curtains.
The Guard I/O 1791ES and 1791DS modules support both single and dual-channel modes that allow for use in Safety Categories 2, 3, and 4. They all have time-setting switches that allow for the monitoring of logical discrepancies between 2 channels. The Guard I/O 1791ES and 1791DS modules have 4 dual-channel bipolar safety outputs that are the current-sinking/current sourcing type with 2 Amps maximum input current ratings, and these safety outputs can only be controlled by safety controllers. The Guard I/O 1791ES and 1791DS modules have current sourcing pulse test outputs that can be used to detect short-circuit conditions on the safety inputs, and these outputs can be configured for standard outputs. These devices collect both I/O and I/O status data for the monitoring of I/O operation, and the 1791DS (only) devices have password-protected security that protects the configuration data. The Guard I/O 1791ES and 1791DS modules are DIN Rail mounted, and they come with removable I/O connectors that support mechanical keying.