Description
Volkmann 70545AA 70490AA Drive Control Panel Spectrol MOD 534 Eagle 17P4C Relays
This is a complete drive control panel assembly removed from a Volkmann 70545AA / 70490AA 30/40 KVA Adjustable Frequency AC Drive system (0–600 Hz / 0–667 Hz). Mounted on a large red backplane, the panel integrates relay sockets, terminal block arrays, a multi-conductor cable harness, and four Spectrol Reliance precision potentiometers configured as Speed 1 through Speed 4 control knobs — providing the core switching and frequency-reference control functions for the parent drive.
Specifications & What's Included
- Panel: Volkmann 70545AA / 70490AA drive control panel assembly
- Compatible drive: Volkmann 30/40 KVA Adjustable Frequency AC Drive, 0–600 Hz / 0–667 Hz output range
- Red fiberglass/metal backplane with full pre-wired harness
- Qty 1 – Potter & Brumfield R10S-E2-Y2.5K relay, 2.9 mA DC coil
- Qty 8 – Eagle Signal 17P4C (26007 A120) relays, AC 120V coil; labeled K3–K6 and K11–K14
- Qty 4 – Spectrol Reliance Precision Potentiometer MOD 534, mounted on white aluminum bracket; labeled Speed 1, Speed 2, Speed 3, Speed 4
- Multiple terminal block strips (TB series) for field wiring connections
- Multi-conductor cable harness with blue ferrule-terminated conductors
- Panel only — no enclosure or external drive chassis included
Applications
Volkmann manufactured adjustable-frequency AC drive systems primarily for industrial motion control applications where variable-speed operation of AC motors was required — common in manufacturing, web-handling, and process control environments. This control panel serves as the relay switching and speed-reference sub-assembly within the drive, routing 120V AC control signals through the Eagle Signal relays and providing analog speed setpoints via the four Spectrol MOD 534 precision potentiometers. The Spectrol MOD 534 is a multi-turn wirewound precision potentiometer well regarded in industrial control circles for stable, repeatable resistance output — making it a natural choice for frequency-reference trim in variable-frequency drive systems. This panel is suitable as a direct replacement part for a Volkmann 70545AA or 70490AA drive, or as a source of quality surplus relay and potentiometer components for industrial repair and custom control panel builds.
This Volkmann 70545AA / 70490AA drive control panel has been inspected and is in good condition. The panel was pulled from a Volkmann 30/40 KVA adjustable-frequency AC drive system. The red backplane, relay sockets, terminal blocks, wiring harness, and Spectrol MOD 534 potentiometer assemblies all appear intact and undamaged. The white potentiometer bracket shows some surface marks consistent with normal use. All eight Eagle Signal relays and the Potter & Brumfield relay are present and seated. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Volkmann |
Model: |
70545AA |
Secondary Model: |
70490AA |
MPN: |
70545AA |
SKU: |
48620 |
Type: |
Industrial Drive Control Panel |
Condition: |
Used – Inspected and in Good Condition |
Compatible With: |
Volkmann 30/40 KVA Adjustable Frequency AC Drive |
Drive Frequency Range: |
0–600 Hz / 0–667 Hz |
Drive Power Rating: |
30 / 40 KVA |
Relay 1 – Brand/Model: |
Potter & Brumfield R10S-E2-Y2.5K, 2.9mA DC (Qty 1) |
Relay 2 – Brand/Model: |
Eagle Signal 17P4C 26007 A120, AC 120V (Qty 8) |
Potentiometer – Brand/Model: |
Spectrol Reliance Precision Potentiometer MOD 534 (Qty 4) |
Relay Coil Voltage: |
AC 120V (Eagle Signal); DC 2.9mA (Potter & Brumfield) |
Number of Relays: |
9 total (8 Eagle Signal + 1 Potter & Brumfield) |
Number of Potentiometers: |
4 |
Potentiometer Function: |
Speed 1, Speed 2, Speed 3, Speed 4 control knobs |
Panel Color: |
Red |
Form Factor: |
Flat Panel / Board Assembly |
Seller Notes: |
Panel only; pulled from Volkmann 70545AA/70490AA 30/40 KVA AC drive system. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
Volkmann 70545AA/70490AA drive control panel. Inspected and in good condition. Pulled from a Volkmann 30/40 KVA adjustable-frequency AC drive. All relays and Spectrol MOD 534 potentiometers present and intact. |
