PACIFIC SCIENTIFIC PC834-001-N - Image 1

PACIFIC SCIENTIFIC PC834-001-N - Image 2

PACIFIC SCIENTIFIC PC834-001-N

Product Name: Pacific Scientific (Kollmorgen/Danaher) PC834-001-N Brushless Servo Drive, PC800 Series

Overview:

Convection-cooled 480 V class 3-phase digital servo amplifier with resolver-to-digital conversion, 400 Hz bandwidth, 24-bit position loop. Drives Pacific Scientific brushless motors in CNC, converting, and test rigs.

Category: Others

Description

Technical Specifications:

Input: 323–528 V AC 3-phase (480 V nom)
Continuous: 7.1 A RMS (2.6 kW)
Peak: 21.2 A RMS (1 s)
Switching: 16 kHz PWM
Feedback: Resolver, incremental encoder, SinCos
Control: ±10 V torque/velocity, step/dir, optional SERCOS
Resolution: 24-bit position
Bandwidth: 400 Hz current loop
Cooling: Convection, no fan
Temp: 0–40 °C ambient
Ingress: IP20 cabinet mount

Features:

DRDC resolver conversion (no separate RDC)
97% power-stage efficiency
Phase-loss, over-temp, I²t motor protection

Working Principle:

DC bus from rectified 480 V feeds IGBT bridge; current sensors close 16 kHz PWM loop; resolver demodulates rotor angle; outer loop accepts analog command or SERCOS motion telegram.

Applications: Indexing tables, labelers, spindle servos, robotics prototype axes.

Installation & Wiring:

Mount vertical in cabinet with 50 mm top/bottom clearance, motor cable <50 m shielded, 480 V supply via contactor with 10× In fuse, resolver cable separate from power tray.

Precautions:

Never enable before auto-commutation tune; 480 V DC bus >700 V can destroy IGBTs if regen not clamped; convection version must not be fan-blocked.

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