Detailed Product Description

PROGRAMMABLE DUAL TRIP ALARM BDTA7838

• 11-pin box for DIN-rail mounting
• Bright 3-digit 10 mm LED display
• Universal linear input 0-10VDC, 0/4-20mA
• Up to 2 alarm relays available with pulsed output
• Auxiliary output for powering external transmitters
• Fully programmable parameters

FUNCTION

BDTA7838 is a programmable process trip alarm for DIN-rail mounting. Equipped with a bright 3-digit LED display, this model is especially suitable for measuring and controlling various

technological values from -199 to 999 with resolution of up to 1000points. The device can have up to 2 programmable relays providing on/off control/alarm with or without pulse mode. BDTA7838 accepts various linear input voltage or current signals from 2- and 3-wire transmitters that can be powered internally via the auxiliary power supply output. The display-to-input correspondence, decimal point position, measurement offset value as well as many other parameters are fully programmable. Thanks to its excellent price-toperformance ratio, BDTA7838 is an exceptionally widely applicable device.

SPECIFICATIONS GENERAL

Construction : Plug-in to standard 11-pole relay socket

Wiring : Screw terminals on base socket

Housing material : Plastic

Isolation : Input to output to supply

Set point : -199 to 999 programmable

INPUT

Current : 0 (4) -20mA ( -199 to 999 programmable)

Voltage : 0 (5) 10V ( -199 to 999 programmable)

OUTPUT

Relay : 5A/250V w/ NO/NC or NO contact NO for the second relay

SSR : 1230 VDC, 15 mA

Control algorithm : ON/OFF, Pulse mode

Alarm parameters : Programmable

Auxiliary output : 12-30 VDC, 30 mA, for transmitter power supply

INSTALLATION

Supply : 230, 115, 24VAC ±10% 48-62Hz 24VDC ±10%

Operating temp : -10 to +65°C (-4 to +140°F)

Operating humidity : 80% RH max (non-condensing)

Mounting : In 11-pin socket or on DIN rail

Protection : IP44

Size : W35 x H78 x D91mm with socket

Weight : 180g

PERFORMANCE (% of span)

Measurement error : < ±0.2%

Temperature drift : ±0.02% from span for 1°C

Digital display : 3 digit LED, higtht10mm

LED : 2 LED for relay status

Keyboard : 3 lockable membrane keys

Dielectric strength : 2000VAC @ 1 minute

Isolation : Input to output to supply 1500VDC/AC

Observed authority requirements : CE-marking

Electromagnetic compatibility: Complies with EN 50081-1, EN 50082-2, EN 61010-1

ORDERING INFORMATION

Specify code numbers and variables

BDTA7838

SUPPLY         OUTPUT OPTION

X Specify         X None

A 230VAC       C Relay

B 115VAC       J Extern SSR

D 24VAC/DC