Catalogs > Industrial Controls Catalog > Motor Control, Solid-State > Soft Starters > STC™ Starting Torque Controller
STC™ Starting Torque Controller
| Introduction |  |
Standards Compliance and Certifications | |
Cat. No. Explanation | |
Product Selection | |
Specifications | |
Approximate Dimensions | |
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Typical Across-the-Line Response
The figure above shows how starting torque surge during motor startup can cause damage to the motor and to driver equipment.
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STC Response
The figure above shows how the STC controller is effective in decreasing the magnitude of starting torque surges.
| Electrical Ratings | |||||
| Cat. No. | 154-A11… | 154-A16… | 154-A22… | ||
| Rated Operating Current | [A] | 11 | 16 | 22 | |
| Maximum Heat Dissipation | [W] | 15 | 18 | 24 | |
| Power Section | Back-to-back SCR(s) | ||||
| Rated Operational Voltage (+10%, –15%) | 100…120, 200…230V AC, 50/60 Hz, 1-phase, or 200…230, 380…460, 500…575V AC, 50/60 Hz, 3-phase |
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| Cable Size | Power Terminals | 1.5…6 mm2 (14…12 AWG) | |||
| Thermal Capacity | IEC 34 (S1), NEMA MG 1 | ||||
| Electrical Design Specifications/Test Requirements | |||||
| Repetitive Peak Inverse Voltage Rating | 1400V up to 480V Line 1600V up to 600V Line |
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| Selectable Start Times Selectable Initial Torque Settings |
0.1…4.5 s 10…80% Locked Rotor Torque |
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| Noise and RF Immunity | Surge Transient Peak 3400V. Showering Arc 1500V | ||||
| DV/DT Protection | RC Snubber Network | ||||
| Mechanical Design Specifications/Test Requirements | |||||
| Vibration | 2.5 G for 60 min | ||||
| Shock | 30 G for 11 ms | ||||
| Construction | Power Poles Control Metal Parts |
High-temperature thermoplastic moldings Thermoplastic moldings Anodized aluminum, plated brass or copper |
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| Terminals | Power Terminals Power Terminals Markings |
6.0 mm hole with clamping plate CENELEC EN50 012, NEMA |
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| Functional Design Specification | |||||
| Standard Features | Setup | Wiring Configuring |
The STC controller is wired in series with a motor starter. The STC controller is configured with rotary digital switches. |
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| Starting | From an initial torque setting, the STC controller increases the voltage gradually during the acceleration period until full voltage is achieved. |
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| Running | Protection | Motor overload protection is provided by the overload relay as part of the motor starter. | |||
| Environmental | |||||
| Temperature | Operating Storage |
0…+50 °C (32…122 °F) –40…+85 °C (–40…+185 °F) |
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| Altitude | 2000 m (6560 ft) | ||||
| Humidity | 5…95% RH (non-condensing) | ||||