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.

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

International certification: meets ROHS environmental requirements; CE certification requires the use of appropriate filters to cover the 2004/108/EC Electromagnetic Compatibility Directive (EN 61326 Industrial Immunity Class A emission, not applicable to Class B environment) and the 2006/95/EC Low Voltage Directive (EN 50178 safety requirements), but phase angle and phase angle input control signal types with current limitation (P and L) do not have CE certification 🔶 1-45 🔶 1-46 🔶 1-47 🔶 1-48 🔶 1-49 🔶 1-50 🔶 1-51.

North American certification: UL ®  50 Type 4X shell certification, UL ANSI/ISA 12.12.01 temperature code T4A; The through wall heat sink component is suitable for Class I, Zone 2, Groups A, B, C, and D hazardous and non hazardous areas, but safety warnings such as "replacing any component may affect the applicability of hazardous areas" and "cannot be disconnected when the circuit is live unless the area confirms that there is no flammable concentration" are clearly stated 🔶 1-54 🔶 1-55 🔶 1-56； Simultaneously for UL ®  508 listed products, C-UL ®  Document number E73741.

Installation specifications and size requirements

1. Installation method and steps

(1) DIN rail installation (DIN EN 50022, 35 × 7.5mm rail)

Installation steps: ① Push the device in and press down to clamp the top rail hook into the rail; ② Rotate the bottom of the device towards the guide rail; ③ The guide rail buckle will "click" to fasten. If it is not fastened, check whether the guide rail is bent; ④ The heat sink must be installed vertically (core requirement to ensure heat dissipation efficiency) 🔶 1-223 🔶 1-224 🔶 1-225.

Disassembly steps: Press and release the buckle, while rotating the device upwards and away from the guide rail to remove it.

Spacing requirement: A 102mm (4.0 inches) gap should be reserved on the side for airflow and wire bending radius; The front is designed with anti touch features, requiring no additional clearance; Minimum snap distance 34.8mm (1.37 inches), maximum 35.3mm (1.39 inches) 🔶 1-236 🔶 1-245.

(2) Panel installation

Four M4 (# 8) fasteners are required for fixation. Please refer to the panel installation dimension diagram on page 7 of the manual for specific dimensions, with a focus on the grounding wire entry position (13mm/0.50 inches) and the parallel arrangement wire gap (83mm/3.25 inches).

(3) Wall through installation (UL) ®  50 Type 4X Shell Model

Additional materials: 1 silicone gasket, 8 M5 screws and locking washers, 1 DIN-A-MITE C wall penetrating device 🔶 1-253 🔶 1-254 🔶 1-255.

Installation steps: ① Drill holes and cut the panel according to the size diagram on the right; ② Remove the mounting screws from the heat sink; ③ Tear off the protective film of the silicone gasket, attach the gasket to the heat sink, and ensure that the gasket hole is aligned with the heat sink screw hole; ④ Vertically install heat sink, torque controlled at 2.26-2.82 Nm (20-25 inch pounds) 🔶 1-257 🔶 1-258 🔶 1-259.

Size and Gap: The panel opening should meet the contour requirements of 178mm (7.00 inches) × 122mm (4.81 inches), and a minimum gap of 102mm (4.0 inches) should be reserved above and below the heat sink for airflow. A minimum gap of 10mm (0.4 inches) should be reserved on both sides.

2. Requirements for wiring terminals

(1) Input terminal (control signal type)

Adopting a crimping design, compatible with 0.2-1.5mm ² (24-16 AWG) wires; Use a 3.5mm (1/8 inch) flathead screwdriver and tighten to a torque of 0.5 Nm (4.4 inch pounds); The stripping length of the wire is 5.5mm (0.22 inches); The insulation level of the wire must be ≥ 75 ° C and is only applicable to copper conductors 🔶 1-61 🔶 1-62 🔶 1-63 🔶 1-64.

(2) Main circuit terminals (phase line, load, grounding)

Also of crimping type, compatible with 2.5-25mm ² (14-3 AWG) wires; Can be tightened with a 6.4mm (1/4 inch) flathead screwdriver or a 1A type # 2 Pozidriv screwdriver to a torque of 2.7 Nm (24 inch pounds); Wire stripping length 11mm (7/16 inches); Core maintenance requirement: Re tighten after 48 hours (to reduce wire cold flow), and then re tighten every 3-6 months thereafter 🔶 1-66 🔶 1-67 🔶 1-68 🔶 1-69 🔶 1-70.

(3) Cooling fan terminal

Adopting a quick connect design (1/8 inch push in), compatible with 16-14 AWG wires; Recommend using Amp part number 640929-1 or equivalent product 🔶 1-85.

Control mode and signal configuration

1. Zero crossing control mode (including contactor and proportional control)

(1) Type of contactor (input control signal)

DC input (Type C): 4.5-32V (DC) input, with a maximum current of 6mA per channel at 4.5V. An additional 2mA total current is required for each additional LED; To extend the service life, the cycle time should be less than 3 seconds 🔶 1-94.

AC input (Type K): Suitable for 24V (ac) ± 10%, 120V (ac)+10%/-25%, 240V (ac)+10%/-25%, with a maximum current of 25mA per circuit; it is strictly prohibited to share with temperature controllers with RC buffer circuits. If used, the RC buffer circuit must be removed first; Cycle time should be less than 3 seconds to extend lifespan 🔶 1-95 🔶 1-98.

(2) Proportional control (Type F, 4-20mA DC)

Variable time base control for loop power supply, only applicable to F0 input option; A current source of 8.0V (dc) or higher is required, with no more than 2 series inputs; Linearity requirements: Full open point 19.5-19.9mA (dc), maximum peak voltage 6.2V; Input output power accuracy ± 5% (0% -100% range, 4.3-19.7mA or 12.3-19.7mA); Temperature stability<0.15%/° C 🔶 1-96 🔶 1-102 🔶 1-105 🔶 1-106.

2. Phase angle and single cycle variable time base control

(1) Phase angle control (single-phase specific)

Applicable models: Type P (pure phase angle), Type L (phase angle with current limitation), only supports single-phase configuration, and has no alarm option 🔶 1-111.

Input signal: Supports 0-20mA, 4-20mA, 12-20mA (DC) and 0-5V, 1-5V, 0-10V (DC); Input impedance: 4-20mA signal is 250 Ω, linear voltage signal is 5k Ω 🔶 1-112.

Output and accuracy: Output voltage covers 100-120V, 200-208V, 230-240V, 277V, 400V, 480V, 600V (ac), deviation -15%/+10%, frequency 50/60Hz (deviation ± 5%); At 25 ° C, the output conduction time is directly proportional to the command signal, with an accuracy of ± 5%; Temperature stability<0.25%/° C 🔶 1-115 🔶 1-117.

Soft start function: 5-second soft start when powered on, soft start when thermostat overtemperature occurs, soft start when half cycle dropout detection occurs, 1-second soft switching when set value changes, protecting load and devices 🔶 1-124 🔶 1-125 🔶 1-126.

(2) Single cycle variable time base (Type S)

Working logic: At 50% power, "1 cycle on, 1 cycle off"; At 25% power, "conduct for 1 cycle and close for 3 cycles"; Continuous conduction for no more than 1 cycle when power is less than 50%, and continuous shutdown for no more than 1 cycle when power is greater than 50% 🔶 1-110.

Accuracy and adaptability: The output power is proportional to the command signal at 25 ° C, with an accuracy of ± 5%; Temperature stability<0.25%/° C; supports linear voltage, 4-20mA or potentiometer input 🔶 1-120.

3. Resolution and Additional Options

Resolution: The accuracy of the output variation relative to the input range is greater than 0.1%.

Manual control kit: Optional 1k Ω single turn potentiometer (with 0-100% dial), part number 08-5362.

Ordering coding rules and current levels

1. Model code disassembly (complete code: DC+phase+cooling/current+voltage+control signal+alarm+language+customization)

Meaning and Options of Encoding Segments

DC prefix: Fixed identifier (DIN-A-MITE Style C)

Phase configuration 1=single-phase 1 controlled leg; 2=Three phase 2 controlled legs; 3=Three phase, three controlled legs (four wire star); 8=2 independent area; 9=3 independent areas

Cooling/current 0=natural convection (standard DIN rail/panel heat sink); 1=120V AC fan cooling; 2=240V AC fan cooling; 3=24V DC fan cooling; T=Natural convection (wall/cabinet type heat sink, UL 50)

Voltage level 02=24-48V AC (C/F/K control); 12=100-120V AC (L/P/S control); 20=200-208V AC (L/P/S control); 24=120-240V AC（C/F/K）/230-240V AC（L/P/S）； 27=277V AC（L/P/S）； 40=400V AC（L/P/S）； 48=480V AC（L/P/S）； 60=277-600V AC（C/F/K）/600V AC（L/P/S）

Control signal C0=4.5-32V DC contactor; K1=22-26V AC contactor; K2=100-120V AC contactor; K3=200-240V AC contactor; F0=4-20mA ratio (loop power supply); L (0-5)=phase angle with current limitation (single-phase); P (0-5)=phase angle (single-phase); S (0-5)=single cycle variable time base; Input types corresponding to 0-5 in parentheses: 0=4-20mA, 1=12-20mA (S only), 2=0-20mA, 3=0-5V DC, 4=1-5V DC, 5=0-10V DC

Alarm option 0=No alarm; S=SCR short circuit alarm (not applicable to 8/9 area or L/P control); H=heater open circuit+SCR short circuit alarm (only S control)

Manual language 0=English; 1=German; 2=Spanish; 3=French

Customized option 00=standard parts; 1X=1-second soft start (P/L control); XX=Custom Options/Identification

2. Current level table (by model prefix)

Model prefix Current level Remarks

DC10 55A natural convection (standard heat sink)

DC1T 62A natural convection (through wall/cabinet type heat sink)

DC11/DC12/DC13 75A fan cooling (120V AC/240V AC/24V DC)

DC20/DC80 40A three-phase 2-leg/2-zone, natural convection

DC2T/DC8T 46A three-phase 2-leg/2-zone, through wall heat sink

DC81/DC82/DC83/DC30/DC90 30A 2-zone fan cooling/three-phase 3-leg/3-zone natural convection

DC3T/DC9T 35A three-phase 3 leg/3 area, wall penetrating heat sink

DC31/DC32/DC33/DC91/DC92/DC93 55A three-phase 3 leg/3 zone, fan cooling

Selection of fuses and EMI filtering

1. Semiconductor fuse (suitable for applications with 600V AC and below)

Rated current of fuse Watlow fuse model Bussman fuse model Watlow bracket model Ferraz bracket model

30A 17-8030 FWP30A14F 17-5114 USM141i

40A 17-8040 FWP40A14F 17-5114 USM141i

50A 17-8050 FWP50A14F 17-5114 USM141i

63A 17-8063 FWP63A22F 17-5122 US221i

80A 17-8080 FWP80A22F 17-5122 US221i

100A 17-8100 FWP100A22F 17-5122 US221i

2. Combination fuse (suitable for applications with 600V AC and below)

Rated current of fuse Watlow, fuse model Bussman, Watlow bracket model Bussman, bracket model

30A 0808-0325-0030 DFJ30 0808-0326-1530 CH30J1i

40A 0808-0325-0040 DFJ40 0808-0325-3560 CH60J1i

50A 0808-0325-0050 DFJ50 0808-0325-3560 CH60J1i

63A 0808-0325-0060 DFJ60 0808-0325-3560 CH60J1i

80A 0808-0325-0080 DFJ80 0808-0325-7010 J60100-1CR

100A 0808-0325-0100 DFJ100 0808-0325-7010 J60100-1CR

3. EMI filtering requirements (electromagnetic interference suppression)

Mandatory scenario: When the load current is greater than 6A and the frequency is 150-250kHz, an external EMI filter must be used. Watlow verified that the "Tank Filter" can effectively suppress the EMI generated by the SCR power controller and meet the conducted emission limit.

Filter selection: For single-phase 230V (ac), choose Crydom 1F25 or Watlow 14-0019; Choose Crydom 3F20 or Watlow 14-0020 for three-phase 440V (ac); At the same time, a warning is issued that "slot filters may suppress useful communication in the 150-250kHz frequency band (such as baby monitors, medical alarm systems), and there is no safety risk that needs to be verified in advance" 🔶 1-437.