GETH seires AC switching module device
GETH introduction
Applications
Applied in fields of single-phase or 3-phase power heating control
Features
- Integrates zero controlled SSR, cycle controller, radiator, temperature control switch, impedance capacitance absorber.
- Hand-control interface: 0-10k potentiometer
- Automatic control interface: 4-20mA(I model), 0-5V
- PWM input(P model)
- German chips, DBC ceramic substrate, insulating voltage Viso≥2.5KV(RMS)
- Advanced welding technology, low heat impedance, long life-span.
- PIC SCM control, agile and stable.
- Soft start and power control
- Incorporated design, convenient in using. |
Internal connections , classification and name
Technical standards
Main technical standards
| Function |
SSR3-phase AC voltage modulation(PWM output) |
| Input voltage |
380V+20% |
| Controlling current(For Model I) |
4-20mA |
| Controlling pulse-width modulation(Model P) |
Cycle is 2 seconds,0-5V |
| Hand control |
10KΩ potentiometer adjustment |
| Cooling |
Wind-cooling radiator,motor of the fan:220V 0.15-0.25A |
| Ambient temperature |
-30～+40℃ |
| Temperature protection |
+75℃+2℃ |
Main parameters(SSR)
| Parameter |
Unit |
Value |
| Nominal current |
Arms |
100 |
200 |
300 |
500 |
800 |
| 3-phase working current |
Arms |
3*100 |
3*200 |
3*300 |
3*400 |
3*800 |
| Breaking voltage for SSR |
Vpk |
1200 |
| Frequency |
Hz |
50-60 |
| On state voltage drop(Max.) |
Vrms |
1.6 |
1.8 |
| Insulating voltage of the substrate |
Vrms |
≥2500 |
Input control mode
|
- Impulse width modulating impulse(duty cycle), control period:2 seconds, 0-5V supplied, max input current < 3mA
- 4-20mA input I model
- Acceptable impedance: 330Ω, adaptive interface: 4-20mA, output: 0-5V, input: PID adjuster or DCS output interface.
- Output: 12V impulse, max drive current: 100mA.
- Hand-control of automation: 10K potentiometer control
- Internal MS output: Selected by jumper plug terminals (1) PWM duty cycle output, (2) cycle CYC output
- Internal power control: Adjusted by internal potentiometer
- Sphere:0-100% 。
- 60-second electric delay start-up: Used in first electrification or the transfer from hand-control to automation, aimed to reduce the mean power in cold start.
- Indicators: Power supply: red LED on, output: green LED on
- Connection mode of the load: 50Hz AC single-phase wire, 3-phase triangle (midpoint not connected to ground), 2 controls of 3-phase, pure resistance and no phase order of the load
- Power supply: 220V 50Hz 3W |
Working wave(50Hz AC input)
Installation dimensions
Type
Dimension |
GETH-40-150 Image1 |
GETH-200-250 Image2 |
GETH-300-400 Image3 |
| Volume L*B*H(mm) |
350*164*159 |
350*164*231 |
380*164*231 |
| Mounting hole a*b*Φ |
330*82*Φ9 |
330*82*Φ9 |
330*82*Φ9 |
| Control dimension |
105*95*60 |
105*95*60 |
105*95*60 |
Cautions and others
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This product is suitable for loads of resistances, particularly for high-powers heating loads, radiators and fans are all equipped when delivered.
For the protection of the module, we suggest using fast acting fuse to prevent damages of over current; For over voltage protection, we have adopted impedance capacitance absorbing and pressure responsive resistor; for over temperature protection, a temperature switch of 75℃ is applied, when the temperature of the load exceeds 75℃, no output until problem solved, the system will come back to normal as the temperature drops below 75℃.
PWM input cycle: the default value is 2 seconds, when using, it should be in accordance with the controller.
Internal power control:It should be adjusted appropriately by internal potentiometer 10K;too little value will lead to no output
Display of current of the load:Common ammeter and mutual inductor can be selected, the feature of cycle reach-0 can avoid the strike of the ammeter, as the current of the load is intermittent, so the vibration of the ammeter fingers is natural.
The balance of the 3-phase load: In the cycle of the 3-phase (midpoint not connected to ground), as the neutral zero of SSR is floating, the current of the inphase port is bigger than the other two. Therefore, when using, the symmetry degree of the heater power needed to be adjusted or exchange the input power phases.In the mode of the 3-phase (midpoint connected to ground) or PWM, the current of the load is balanced.
the connection sketch of the control mode | |
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- Internal MS output and jumper selection
(1)when using in single, PWM duty cycle is always selected.
(2)when using in multi-equipments,please adopt period CYC output,another time of electrification is necessary in the confirmation if the output mode is changed.
- The housing of the equipment needs to connect to ground for the consideration of safety and interference. | | |
