Key Technical Specifications
- Rated Voltage: 12/24 VDC
- Output Current: 0.5 Amps maximum per point
- Response Time: 2 ms maximum (On/Off)
- Output Logic: Negative Logic (Sinking)
- Isolation: 250 VAC continuous, 1500 VAC for 1 minute
- Power Consumption: 110 mA from 5 VDC bus
- Outputs per Module: 16 (two groups of eight)
- Surge Current: 4.78 Amps for 10 ms
- Off-state Leakage: 1 mA maximum
- Protection: No onboard fuses
Product Introduction
KOLLMORGEN S21260-SRS is a high-stability digital servo drive and output module designed for precise industrial motion control. It integrates seamlessly into S200 series architectures to manage motor starters, solenoids, and indicators.This module delivers reliable negative logic sinking with a 2 ms response time and 250 VAC field-to-backplane isolation. Its 0.5 A per-point capacity handles standard industrial loads while maintaining signal integrity in demanding environments.
Installation & Configuration Guide
Preparation (10 min)
Verify power supply is 12/24 VDC ±10%. Gather insulated tools and ESD wrist strap. Review wiring diagram for negative logic connections.Removal (5–10 min)
Disconnect field power and backplane power. Wait 60 seconds for capacitor discharge. Remove mounting screws and slide module out of backplane.Installation (10 min)
Align S21260-SRS with backplane guide rails. Push firmly until seated. Secure mounting screws to specified torque. Connect field wiring to correct terminals.Power-On & Test (10 min)
Restore backplane power first. Check LED indicators for normal status. Apply test signal to verify 2 ms response. Monitor for 15 minutes under load.
Troubleshooting Quick Reference
| Symptom | Probable Cause | Action |
|---|---|---|
| No LED illumination | Backplane power failure | Measure 5 VDC at backplane connector |
| Intermittent output | Loose field connection | Torque terminal screws; inspect wire crimps |
| Output stuck ON | Shorted load device | Disconnect load; measure output leakage |
| Slow response | Excessive cable capacitance | Reduce cable length; verify 2 ms spec |
| Overcurrent trip | Load exceeds 0.5 A | Measure actual load current with meter |
Dimensions, Mounting & Wiring Notes
- Mounting: Backplane plug-in module with mechanical retention
- Terminal Type: Screw-clamp for field wiring
- Wiring Note: Connect loads between positive bus and output terminal (negative logic)
- Grounding: Ensure frame ground connection per OEM specification
- Clearance: Maintain 10 mm minimum spacing for airflow
FAQ
Is S21260-SRS compatible with older S200 racks?
Yes, but verify backplane revision. Some early S200 backplanes require firmware updates for full compatibility.What happens if I exceed the 0.5 A limit?
The module has no internal fuse. Exceeding 0.5 A risks permanent damage to the output transistor. Size your load carefully.Can I use this for AC loads?
No. S21260-SRS is strictly 12/24 VDC. Applying AC voltage will destroy the module instantly.I lost my wiring diagram, where do I find it?
Check the Kollmorgen documentation portal or contact your distributor. The negative logic configuration is critical — wrong wiring causes immediate failure.Are refurbished units reliable?
Function verified under test conditions. We perform 24-hour load testing and document results. However, new surplus units carry lower long-term risk for critical applications.How do I know if it’s genuine Kollmorgen?
Check the label for correct part number formatting and serial number. Counterfeit modules often have misspelled markings or incorrect PCB revisions.
