Watlow DIN-A-MITE ® Style C Solid State Power Controller

Watlow DIN-A-MITE ®  Style C Solid State Power Controller

Product basic information and manufacturer background

1. Product positioning and manual usage

This product is an industrial grade solid-state power controller, with the model identification as "DIN-A-MITE ®  Style C”， The manual clearly states that its core function is to guide users in completing product installation, wiring, parameter configuration, and safe operation and maintenance. It also includes specifications and recommended solutions for semiconductor fuses that users are concerned about, and emphasizes the need to follow national and local electrical safety regulations during installation.

2. Core configuration range of the product

Electrical basic parameters: Supports single-phase, three-phase 2-leg, and three-phase 3-leg (suitable for four wire star loads) configurations, with AC voltage coverage of 120-600V (ac) and current switching capability ranging from 30-80A depending on the model. Please refer to the output rated curve for specific specifications 🔶 1-9.

Control and protection options: Provide zero crossing variable time base or AC/DC input contactor versions, some zero crossing models have thyristor (SCR) short circuit protection and heater open circuit protection; Single phase models additionally support phase angle control and phase angle control with current limitation, and product configuration information can be directly identified through model coding.

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Detailed technical specifications

1. General electrical parameters

(1) Current is related to power

Rated current: Please refer to the output rated curve on page 5. Different cooling methods (natural convection, fan cooling, through wall installation) and load types (resistive heater load) correspond to different rated values, and it is clear that the rated value is based on the resistive heater load 🔶 1-22.

Transient and limit current: The maximum peak surge current within 16.6 milliseconds is 1350A; the selection of fuses must meet the maximum value of 9100 A ² s for I ² t; The minimum latch current of SCR is 500mA, and the minimum holding current is 200mA to ensure stable triggering and operation of the device 🔶 1-24 🔶 1-25 🔶 1-26.

Auxiliary current and power consumption: The fan current varies depending on the power supply -0.14A at 24V (dc), 0.12A at 120V (ac), 0.06A at 240V (ac); the maximum off state leakage current is 1mA at 25 ° C (77 ° F); the power loss of each controlled branch is 1.2 watts/ampere (calculated based on switching ammeter) 🔶 1-28 🔶 1-29.

(2) Voltage range

Segmented by voltage level input range: 24-48V (ac) models with minimum 20V and maximum 53V; 120-240V (ac) models with minimum 48V and maximum 265V; 277-600V (ac) models with minimum 85V and maximum 660V, covering commonly used industrial voltage scenarios and adapting to different regional power grids 🔶 1-33 🔶 1-34.

(3) Environmental adaptability

The working humidity is 0-90% relative humidity (without condensation), and the storage temperature range is -40 to+85 ° C (-40 to 185 ° F); The insulation performance has only been tested below an altitude of 3000 meters, and additional evaluation is required for high-altitude scenarios 🔶 1-74 🔶 1-75； Simultaneously passing IEC 60068-2-32 (impact) and IEC 60068-2-6 (vibration) tests to ensure the anti-interference ability of industrial environments 🔶 1-59.

2. Operator interface and alarm function

(1) Interface configuration

Standard configuration includes command signal input and indicator lights, alarm output and indicator lights, and current limit indicator LEDs. Users can intuitively monitor the operating status of the equipment and quickly identify key working conditions such as signal input, alarm triggering, and current limit 🔶 1-18 🔶 1-19.

(2) Alarm function (limited to zero crossing models only)

SCR short circuit alarm: When the input command signal is turned off, but the current transformer detects a load current of 10A or above, an alarm is triggered (2 turns of winding are required for 5A current, 3 turns of winding are required for 2.5A current), and the alarm state is an abnormal combination of "signal off+load current present".

Heater open circuit alarm: Only applicable to models with input control signal option "S". It is triggered when the input command signal is turned on, but the load current detected by the current transformer is lower than the alarm set value, covering the fault scenario of "signal on+insufficient current".

Alarm output characteristics: The alarm output is non latch type and is powered on when triggered; Adopting bidirectional thyristor (Triac) output, compatible with external power supply of 24-240V (ac), rated current varies at different temperatures -300mA at 25 ° C (77 ° F), 200mA at 50 ° C (122 ° F), 100mA at 80 ° C (176 ° F), typical holding current of 200 μ A, latch current of 5mA 🔶 1-42.

3. Certification and Security Compliance