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 | MUSH-4 |
The module is designed for the receipt of alarm notification from detectors SP-2.3, SP-2.4 type, separately from the upper (AL1) and the lower (AL2) sensors, for the control of the integrity AL1, AL2 and the transmission signals “Alarm” and “Fault” to a control panel with the help of galvanic liberated outlets.
The module provides the power voltage stabilization of an alarm loop with the nominal value 15 or 24 V.
The module provides:
- Current restriction when detecting the short-circuit in an alarm loop;
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- Automatic switching-off the power supply of AL1 and AL2 when detecting the short-circuit in any of them;
- Current storage in the circuit of AL1 and AL2 corresponding to the normal status;
- Status indication “Norm”, “Fire”, “Short-circuit”, “Discharge” separately for AL1 and AL2;
- Manual “Discharge” simultaneously for AL1 and AL2;
- Reduction of the resistance value in a signal line of a 4-wire loop when the alarm status occures correspondingly in AL1 and/or AL2;
- Rise of the resistance value in a signal line of a 4-wire loop when any of faults occurs correspondingly in AL1 and/or AL2, and at the absence of power supply on the module.
Technical specifications of the loop matching module MUSH-4
| Nominal power voltage of the module, V |
12 |
| Power voltage range, that the Module keeps the operational ability with, V |
10,2—13,8 |
| Voltage range powering a 2-wire loop in the standby mode with a mounted jumper strap «15/24V», V |
24 ± 0,24 |
| Voltage range powering a 2-wire loop in the standby mode with a dismounted jumper strap «15/24V», V |
15 ± 0,15 |
| Current in a 2-wire loop circuit, the module detects the status “Short-circuit” with in an alarm loop, mA |
≥ 27 |
| Current in a 2-wire loop circuit, the module detects the status “Open-circuit” with in an alarm loop, mA |
≤ 5,0 |
| Absolute value of the magnitude of spasmodic current change, the module detects the status “Fire” with, mA |
≥ 2,8 |
| Resistance of a 2-wire loop (without taking into account the resistance of an output element Rn), the Module keeps its operational capability with, Ω |
≥ 470 |
| Time of the discharge of detectors, s |
≥ 5 ± 1 |
| Time of expectation of detectors’ readiness after the discharge, s |
≥ 5 ± 1 |
| Quantity of detectors connected to a 2-wire alarm loop |
≤ 32 |
| Current consumed by the module in the standby mode, mA |
≤ 100 |
| Current consumed by the module in the “Fire” mode, mA |
≤ 200 |
| Voltage commutated by output switches, V |
≤ 30 |
| Current commutated by output switches, mÀ |
≤ 30 |
| Voltage stepping-down on contacts of open output switches with the current 20 mA, V |
≤ 2 |
| Resistance between contacts of closed output switches, kΩ |
≥ 50 |
| Dimensions, mm | 120×80×30 |
| Mass, kg | 0,2 |
| Ambient temperature, °Ñ | +1 ... +40 |
| Relative air humidity at +35 °Ñ, %, íå áîëåå | ≤ 95 |
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