Description
Product Introduction and Engineering Value
When a legacy motion-control system depends on its original drive architecture, replacing the amplifier with an unverified alternative can introduce more problems than it solves. The Kollmorgen BJRL-20012-110001 is associated with the BJRL family, which integrates servo amplification and programmable positioning functions.
For maintenance teams, the priority is preserving motor compatibility, established motion sequences, feedback wiring, and machine behavior. Confirm the exact electrical ratings and configuration before installation; the model number alone is not sufficient evidence of drop-in compatibility.
Technical Specifications
The following table separates documented BJRL-family characteristics from model-specific details that require confirmation.
| Parameter | Specification or verification requirement |
|---|---|
| Manufacturer | Kollmorgen |
| Model number | BJRL-20012-110001 |
| Product family | BJx / BJR-BJRL |
| Equipment type | Programmable servo positioner/amplifier |
| Motor compatibility | Brush and brushless servo motors, subject to the exact drive configuration |
| Nominal supply class | The BJRL family manual identifies 115 VAC operation; verify the exact model’s permitted input range |
| Motion functions | Positioning, velocity control, acceleration and deceleration profiles |
| Programming | BJx command language, with BASIC-like syntax |
| Serial communications | RS-232 and RS-422/RS-485 are documented for the BJx family |
| Feedback and I/O | Verify the specific unit’s supported feedback configuration and available connections |
| Mounting and cooling | Follow the applicable installation manual and enclosure requirements |
| Product lifecycle | Legacy family; confirm repair support and replacement availability |
Important electrical qualification: Secondary listings provide inconsistent supply and current ratings for this exact part number. Do not use a seller’s generic specification as the basis for selecting fuses, conductors, or a replacement drive. The nameplate and applicable Kollmorgen documentation take precedence.
For reference, the manufacturer’s documents the family architecture, programming, communications, diagnostics, and safety precautions.
Field Application and Engineering Scenario
Consider a hypothetical packaging line where an older servo-controlled indexing mechanism stops responding after a drive failure. The maintenance team has a known-good machine program but limited documentation for the original cabinet.
Rather than installing a visually similar amplifier, the engineer identifies the complete drive model, checks the motor nameplate, records feedback and control connections, and verifies the incoming supply. After confirming compatibility, the team tests the replacement at reduced speed before restoring normal production.
The key lesson: a matching model number is a starting point, not a completed commissioning procedure.
Potential application scenarios, subject to the installed machine configuration, include:
- Packaging-line indexing: Coordinating repeatable movements between filling, sealing, and cutting stations.
- Legacy pick-and-place equipment: Maintaining programmed positioning and acceleration profiles on an existing servo axis.
- Synchronized material handling: Supporting master/slave motion or electronic gearing where the installed BJx configuration provides the required functions.
The BJx manual documents programmable motion profiles, electronic gearing, registration, and serial communications. Actual application suitability depends on the specific drive, motor, mechanics, and control program.

BJRL-20012-110001

BJRL-20012-110001
Quality Assurance and Testing Procedure
For new-surplus and refurbished inventory, condition descriptions should reflect the actual inspection performed on each unit. A seller’s condition label is not proof that a drive has passed functional testing.
1. Identity and condition inspection
Record the complete model number, serial number where available, revision markings, connector condition, and visible signs of damage or previous repair.
2. Electrical and component checks
Inspect for damaged terminals, contamination, corrosion, and signs of overheating. Perform appropriate electrical checks using procedures suitable for the drive’s circuitry.
3. Functional verification
Where suitable test equipment and documentation are available, verify power-up behavior, fault indications, communications, and operation with a compatible motor under controlled conditions.
4. Test records and dispatch
Request the actual inspection or test report, the confirmed stock condition, and the applicable warranty terms before purchase.
These are recommended quality-control steps, not a claim that a particular unit has already passed them. Ask the supplier for unit-specific evidence.
The Veteran’s Tech Trap Guide
Trap 1: Assuming the supply voltage from a reseller listing
Some secondary listings describe the model using different electrical ratings. The BJRL family manual identifies 115 VAC operation, so verify the exact nameplate and permitted supply configuration before energizing the unit.
Trap 2: Replacing the drive without preserving the original program
The BJx platform supports programmable motion control. Back up the existing program and relevant variables before removing a working unit whenever possible. Verify software compatibility rather than assuming programs transfer unchanged between related controllers.
Trap 3: Treating similar connectors as proof of compatibility
Check motor feedback, connector pin assignments, grounding, control signals, and the installed safety interlocks. Disconnect power and follow the manufacturer’s discharge and handling procedures before touching drive terminals.
PRO TIP: Before ordering, photograph the complete nameplate and connectors on the installed unit. Include any revision suffixes and record the associated motor model. This reduces the risk of receiving a related but incompatible part.
Frequently Asked Questions
Is the Kollmorgen BJRL-20012-110001 a servo motor or a servo drive?
It is identified in supplier listings as a servo amplifier or servo drive. The BJRL family manual describes the unit as a programmable positioner/amplifier for servo motion control.
Can this model directly replace another Kollmorgen drive?
Not without a compatibility check. Confirm the full model number, supply requirements, motor type, feedback interface, control connections, and programming requirements. A related BJR or BJRL model is not automatically interchangeable.
Is the BJRL-20012-110001 still available?
It is a legacy product family, and remaining stock may depend on individual suppliers. Confirm current inventory, condition, lead time, and return terms directly with the seller. A product page alone does not establish that a unit is physically in stock.
How can I verify that a unit is genuine new surplus?
Request clear photographs of the actual unit, its nameplate, serial or traceability information where available, and the seller’s written condition statement. New surplus generally means unused inventory outside the manufacturer’s current distribution channel; it does not automatically mean a recent manufacturing date or a current OEM warranty.
What warranty should I expect for new-surplus or refurbished stock?
Warranty coverage depends on the supplier and the unit’s condition. Obtain the warranty duration, coverage exclusions, return authorization process, and remedy for a failed incoming inspection in writing before placing the order. Do not assume that a third-party warranty is equivalent to an OEM warranty.
What information should I provide when requesting a quotation?
Provide the complete part number BJRL-20012-110001, quantity, required condition, delivery destination, and requested delivery date. For technical confirmation, include nameplate photographs, the associated motor model, the installed supply voltage, and any known revision or configuration details.




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