ABB AC800M Series Installation Guide
Model: PM891 3BSE053240R1 (DIN-rail mounted, IP20)
Pre-Installation Requirements
-
Environmental Verification
- Operating temperature: -25°C to +70°C (derate 1%/°C >60°C)5
- Relative humidity: 5-95% non-condensing
- Vibration resistance: 5-500Hz @ 1.5G (IEC 60068-2-6)
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Hardware Checklist
- DIN rail (TS35 compliant, minimum 75mm width)15
- Grounding wire (4mm² copper, ≤0.1Ω resistance)
- Fiber-optic cables (for S800 I/O clusters)1
Mechanical Installation
Step 1: Mounting
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1. Align unit with DIN rail (horizontal mounting only)
2. Secure using rail clips (torque: 0.8 Nm ±0.1 Nm)
3. Maintain clearance:
• ≥50mm above/below for ventilation
• ≥20mm side clearance for CEX-Bus connections:ml-citation{ref="5" data="citationList"}
Step 2: CEX-Bus Configuration
| Interface | Type | Specification |
|---|---|---|
| CN1/CN2 | RJ45 Ethernet | 100BASE-TX (auto-MDI/X) |
| COM4 | Isolated RS-232 | 115.2kbps, 8N1 |
| Optical Bus | ST connectors | 62.5/125µm multimode fiber1 |
Electrical Connections
Wiring Sequence:
-
Grounding
- Connect PE terminal to chassis ground (M4 screw, 1.2 Nm torque)5
-
Power Supply
terminalCopy CodeL+ : 24V DC (18-30V range)
M : 0V reference
- Use twisted-pair cable (AWG 14-22)
- Install 5A slow-blow fuse upstream
-
Redundancy Setup
- For redundant CPUs:
• Connect sync cable (PM891K01/02 models)5
• Max cable length: 3m (shielded CAT5e)
- For redundant CPUs:
P891 3BSE053240R1 ABB pdf
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