Digital general-purpose humidity/pressure controller with one relay output — EVK-521
Спецификация EVK-521
Available on request
Delivery across Russia
Order phone: +7(800)777-18-50
Description
EVK-521 is a digital humidity and pressure controller for general purposes.
It is produced in a compact housing measuring 75 x 33 mm. The user interface includes a display and four buttons. The available IP65 protection rating facilitates cleaning of the controller.
The device is versatile, designed for display, calculations, and process control. The self-diagnostic system and self-monitoring system ensure reliable operation over extended use.
- Specifications
- Dimensions
- Connection diagram
- Applications
| Characteristic | Value |
| Housing | Non-flammable plastic |
| Front protection | IP 65 |
| Connection | Screw-in terminal blocks (power cable, inputs and outputs) 6-pole connector (serial port; on request) removable terminal blocks (power cable, inputs and outputs) on request. |
| Ambient temperature | From 0 to 55 ºC (from 32 to 131 ºF) 10 … 90 % relative humidity without condensation). |
| Power supply | 230 Vac, 50/60 Hz, 3 VA (approx.) 115 Vac or 12-24 Vac/dc or 12 Vac/dc on request. |
| Acoustic alarm signal | On request |
| Inputs for measuring instruments | 1 (chamber sensor) for 0-20/4-20 mA converters |
| Digital inputs | 1 (multifunctional) for normally open/normally closed contact (potential-free contact, 5 V 1 mA) |
| Operating range | Adjustable |
| Digital outputs | 1 relay: load relay (16 A at 250 Vac, changeover contact); |
| Maximum load current | 10A |
| Serial port | Port for communication with monitoring system (via serial interface using TTL with MODBUS communication protocol) or with programming key; on request. |
Regarding the options on the diagram:
- terminals 4 and 5 are available only on models with 230 Vac and 115 Vac power supply; terminals 6 and 7 are available only on models with 12 Vac/dc and 12-24 Vac/dc power supply
- the serial port (optional) is a serial port for connection to the monitoring system (via TTL serial interface with MODBUS connection protocol) or to the programming key; the port must not be used simultaneously for different purposes
Additional information on electrical connection:
- do not use electric or pneumatic screwdrivers when working with the devices;
- when moving the device from a cold environment to a warm one, condensation may form inside it; the device can be turned on approximately one hour after being in the warm environment
- check the operating voltage, power supply frequency, and electrical power of the device; they must correspond to the local power supply
- disconnect the power supply before performing maintenance on the device;
- do not use the device as a protective device;
- for repair and information about the device, please contact the EVCO sales department.
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