If there is a valid signal connected to the optocoupler terminal of this product, the relay will make, and if there is no signal, the relay will break. The input polarity of the signal may be inverted, or the relay may be configured to be normally open or normally closed on power up.
Jump the jumper cap between "o" and "+" to select high-level operation, i.e., the relay will make when the optocoupler terminal perceives a high-level and break when the optocoupler terminal perceives a low-level. Jump the jumper cap between "o" and "-" to select low-level operation, i.e., the relay will make when the optocoupler terminal perceives a low-level and break when the optocoupler terminal perceives a high-level. When the product is configured for low-level operation, the input status indicator will keep illuminated.
The relay of this product may also be configured to a constant make or break, independent of the optocoupler signal. Jumping the jumper cap between "o" and "V" permanently makes the relay, and jumping the jumper cap between "o" and "G" permanently breaks the relay. The "V" and "G" terminals are shipped unpopulated by default and need to be soldered when required.
The optocoupler and relay terminals of this product may be used separately, i.e., as one standalone optocoupler isolated input and one standalone relay isolated output. When using the product in this way, the jumper cap on the product needs to be removed. The functions of the five jumper terminals on the product are listed below. These five terminals may be used according to specific applications in a flexible manner.
| Terminal Name | Function |
|---|---|
| V | Connects directly to the power supply terminal of the product, as a high-level reference voltage. |
| G | Connects directly to the ground terminal of the product, as a low-level reference voltage. |
| + | When there is a high-level at the optocoupler terminal, the output is the same high-level as the supply voltage, otherwise it is low-level. |
| - | When there is a low-level at the optocoupler terminal, the output is the same high-level as the supply voltage, otherwise it is low-level. |
| o | If connected to a high-level above 2V, the relay will make; if connected to a low-level, the relay will break. |
This product has the following modifications whose ordering numbers are in the form of C1S01[aa]R[b]T[c]M[dd]. The [aa] field is fixed as 01, as the module only has a single-channel version; the [b] field and [c] field are the main version number and sub-version number of the module respectively; the [dd] field determines the specific modification of the module. The module modification classes are mutually independent. If no specific requirement is designated when the product is shipped, the default option is the 12V relay output type, i.e., M31. The specific meanings of the [dd] field are as follows.
| Digit | Description | Meaning |
|---|---|---|
| First | Supply voltage of the module | 1: 5V supply type 2: 9V supply type 3: 12V supply type 4: 18V supply type 5: 24V supply type |
| Second | Output modes of the module | 1: Relay output type 2: Transistor output type |
This version is connected to the circuit in open-drain mode. The transistor has a rated working voltage of 12-48V DC and a rated current of 10A. With a 10A freewheeling diode on the transistor, it can directly power an inductive load up to 10A. Compared to relays, transistors are far more sensitive. Thus, when the module is being powered on or off and the input is left unconnected, the transistor may make for a moment and then break. This issue is nonexistent on the relay version but must be accounted for when using transistor version modules, especially when the devices connected to the output may respond to such momentary pulses. An effective countermeasure is to use power sequencing: ensure that the product is powered on before the output is powered on, and that the output is powered off before the product is powered off.
The normal working conditions of this module are shown in the table below. Only within these conditions can normal operation be guaranteed.
| Description | Range |
|---|---|
| Supply voltage | 5V DC: 4.8 - 5.2V 9V DC: 8.5 - 11V 12V DC: 11 - 14V 18V DC: 16 - 20V 24V DC: 20 - 28V |
| Power supply ripple | Less than 1Vp-p |
| Supply current | Less than 50mA |
| Input stress | DC 0 - 30V |
| Output stress | Relay type: DC 30V or AC 0 - 220V, 8A Transistor type: DC 12 - 48V, 8A |
| Input isolating voltage | Less than 250V |
| Output isolating voltage | Relay type: Less than 250V Transistor type: Less than 130V |
| Operating temperature | -20 - 60℃ |
The extreme conditions that this module can withstand are shown in the following table. Stresses at or above those listed here may permanently damage the module.
| Description | Range |
|---|---|
| Supply voltage | 5V DC: 5.3V 9V DC: 11.5V 12V DC: 15V 18V DC: 22V 24V DC: 30V |
| Self-resettable fuse | DC 30V, 500mA |
| Input stress | DC 50V |
| Output stress | Relay type: AC 250V, 10A Transistor type: DC 55V, 10A |
| Input isolating voltage | DC 1000V, 60s (Type test only) |
| Output isolating voltage | Relay type: DC 1000V, 60s (Type test only) Transistor type: DC 250V, 60s (Type test only) |
| Relay mechanical life | Relay type: More than 100,000 times (Actual life varies with load, > 10,000 times under heavy load) |
| Storage temperature | -40 - 85℃ |
The other parameters and certifications of this module are listed as follows. These parameters and certifications include electrostatic discharge, electrical fast transient, and voltage surge tests that comply with the requirements of IEC61000-6-2-2016 (Edition 3.0, 2016-08) for basic industry purposes. During all of these tests, the modules are powered by a well-grounded 12V supply and in active delay operation.
| Item | Details | Passing Criterion |
|---|---|---|
| Electrostatic discharge resistance | IEC61000-4-2: 6kV, discharge on all terminals. | (A) Module functions normally. |
| Electrical fast transient resistance | IEC61000-4-4: 2kV, 5kHz, 2min, applied to all terminals. | (B) Module functions normally, the relay may jitter to a certain degree. |
| Electrical fast transient resistance | IEC61000-4-4: 4kV, 5kHz, 2min, applied to all terminals. | (C) Module is not permanently damaged. |
| Surge resistance | IEC61000-4-5: 1kV voltage surge to ground, applied to power terminals. (Guaranteed by design) | (C) Module is not permanently damaged. |
| Creepage distance | Pollution degree 3, material category IIIa & IIIb, basic isolation from relay terminal to logic side, creepage distance above 6mm. | The actual distance is above 6.05mm, which meets the requirements. |
| Electrical clearance | Pollution degree 3, basic isolation from relay terminal to logic side, electrical clearance above 2mm. | The actual distance is above 2.2mm, which meets the requirements. |
| Certification | CCC-002008: Category 002: accessories for household appliances, product category 002007: programmable controller | Certificate No.: (Applying) |
This product has enhanced stability, thus well resists interferences in general industrial environments, and may be used as a general product in industrial applications. If additional stability is still required, a switching power supply with Electrical Fast Transient (EFT) resistance or a supply line filter is required to power the product, and the power supply cord must be shorter than 3m. During all tests, the negative supply of the product is directly connected to the earth by default. The same connection should be made to obtain the reliability performance in the table above.
The company reserves the right to further modify, upgrade, and amend the product and its manuals without notifications. The user should confirm that the information is complete and up-to-date before placing an order. The company is not responsible for the specific application of the customer and only guarantees that the module functions properly under normal working conditions. This product may be protected by one or more patents or other forms of intellectual properties and may contain third-party intellectual properties; the use of this product does not authorize the user to the patented technologies and intellectual properties contained in this product, nor does it authorize the user to the potentially involved third-party intellectual properties, either expressly or implicitly. Reproduction of this technical manual in part or in whole is allowed only on the premise of maintaining the integrity of the technical data in this technical manual and this legal statement. The company is not responsible for such copies and their uses. This product is not intended for purposes where failure or faulty operations may cause major injuries or major property damages, such as life support equipment or nuclear industry equipment, even if the company has been explicitly informed or implied that the customer may apply the product to such uses. If the customer applies this product to the above-mentioned uses, the company is not responsible for the associated losses caused by the failure of the product. The company does not take responsibility for the user configurations of the product and only guarantees the correct operation of the product according to these configurations. Nor does the company guarantee that the specific configuration is suitable for a specific purpose. The company shall not be held liable for any losses in cases where the user configurations do not fit the specific purpose.