Control units and status indicators for SENS valves
Application
Applied as a valve status feedback device, which allows to obtain information about its triggering.
Data on valves status is transmitted to automated control system and emergency protection system, used for visual (local and remote) malfunction control. It also serves as a signal to carry out the necessary operations by the operators of process systems.
Valves control units BK-1E(R)-LIN are applied within SENS measurement system and allow the user to control SENS solenoid using power and signal SENS line.
Principle of operation
SENS Solenoid valves have a forced actuator controlled by built-in SFU module with built-in closing mechanism position sensor based on a solid-state relay. When the actuator is on hold (the core is fully retracted), curent flowing on the supply wires becomes pulsed; this fact is registered by the secondary devices producing light, relay and digital signals.
Application of SENS valves control units allows to reduce cable routes due to obtaining feedback signals via the supply wires of the valves, which makes feedback signals impervious to electromagnetic induces, as well as a significantly reduces overall man-hours and time on implementation of commissioning.
|
Designation of secondary device
Functions of secondary device
|
BK-1E
|
BK-1ER
|
BK-1E-LIN
|
BK-1ER-LIN
|
BK-1E-DC24
|
BK-1ER-DC24
|
BK-2ER-DC24
|
BK-NE-RS485Modbus
|
MS-1E
|
MS-1E-I
|
MS-6E
|
MS-6ER-24V
|
MS-6ER-220V
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Valve status indication | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Valve power-off toggle switch (button) | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ||
| Relay output of valve status (250V, 6 A) | ✔ | ✔ | ✔ | ✔ | ✔ | ||||||||
| Relay output of cable break control (250V, 6A) | ✔ | ||||||||||||
| Symistor output of valve status (~220V, 1A) | ✔ | ||||||||||||
| Valve control by supply of voltage from 3 to 30 V | ✔ | ||||||||||||
| Control / «SENS» line feedback signal | ✔ | ✔ | |||||||||||
| Control / RS-485 Modbus feedback signal | ✔ | ||||||||||||
| Explosion protection1ExdmIIBT3, -50..+60°C, IP66 | |||||||||||||
| Valves operated at ~220 V (AC) | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |||
| Valves operated at =24 V (DC) | ✔ | ✔ | ✔ | ||||||||||
| DIN-rail cabinet mounting | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |||||
| Wall, panel mounting | ✔ | ✔ | ✔ | ✔ | ✔ |