Switch input relay output safety barrier

Switch input relay output safety barrier, switch input, relay output isolation safety barrier, receives switch or proximity switch input from the danger zone, and transmits it to the safety zone relay output through safety barrier isolation. Each channel can be independently set to input and output same phase or opposite phase control, and also has input line fault detection alarm indication function.

● Switch input, relay output isolated safety barrier, receives switch or proximity switch input from hazardous areas, and transmits it to the safety zone relay output through safety barrier isolation. Each channel can be independently set to input and output in-phase or out of phase control, and also has input line fault detection alarm indication function.

This product is powered by DC24V, and the power supply, input, and output are isolated from each other, while the input channels are not isolated from each other.

Adopting a 12.5mm ultra-thin shell and a D IN35mm standard rail independent installation method (optional bus power supply function).

Product selection:

One in, one out; Dangerous side input signal: switch quantity;

Safety side output signal: relay contact.

One in, two out; Dangerous side input signal: switch quantity;

Safety side output signal: relay contact.

Two in, two out; Dangerous side input signal: switch quantity;

Safety side output signal: relay contact.

Main technical parameters:

Dangerous side input

Input signal: dry contact or N A M U R type proximity switch;

Open circuit voltage: ≈ 8 V;

Short circuit current: ≈ 8 mA;

Output characteristics of safety side relay

Response time: ≤ 10 m S;

Drive capability: 250 V A C, 2 A or 30 V, D C, 2 A;

Load type: resistive load;

Input and output characteristics (set to in-phase control):

On site switch closed or input circuit current>2 1 m A , The output relay is closed, and the channel indicator light is displayed in green.

On site switch open circuit or input circuit current<1 2 m A , The output relay is open and the channel indicator light is off.

Function of switch setting:

Note: For switch input (I), K 2 and K 4 need to be set to O F F state, with no line fault (open circuit, short circuit) detection function; If a line fault (open circuit, short circuit) detection function is required, a 22 K Ω resistor should be connected in parallel at both ends of the switch, and a 680 Ω resistor should be connected in series, as shown in switch (II). Set K2 and K4 to the ON state. When there is a line fault, the indicator light of the corresponding channel displays in red.

Switch input relay output safety barrierparameter

Power supply: DC24V, voltage range: DC15-36V;

Current consumption: (24V power supply, relay conducting);

≤ 20mA (one in, one out);

≤ 35mA (one in two out, two in two out);

Insulation strength: ≥ 2500V AC/1min (between the local and non local ends);

≥ 500V AC/1m in (between power supply and non local terminal);

Insulation resistance: ≥ 100M Ω (between local and non local terminals, power supply) Electromagnetic compatibility: in accordance with GB/T 18268.1 (IEC61326-1) Operating temperature range: -20~+60 ℃ (no condensation, no icing);

Applicable location: Installed in a safe place, it can be connected to intrinsically safe instruments located in Zone 0, Zone 1, Zone 2, IIC, IIB, IIA, T4~T6 hazardous areas;

Applicable on-site equipment: dry contacts or NAMUR type proximity switch inputs that comply with the D IN19234 standard (including intrinsically safe pressure switches, temperature switches, and level switches).