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10 SRD991 PSS EVE0105 E-(en)

SRD991 with HART communication

SRD991-xHxxxx

Signal Input .............Twowiresystem

Reverse polarity protection. . standard feature

Signal range ............4to20mA

Operating range..........3.6to21.5mA

Input voltage ............DC12...36 V

(unloaded)

Load ..................420Ohms,8.4Vat20mA

Communication signal .....HART,1200 Baud, FSK

(Frequency Shift Key)

modulated on 4 to 20 mA

0.5 Vpp at 1 kOhm load

Input impedance Zi........Z=320Ohms

for ac voltage 0.5 to 10 kHz with < 3 dB non-linearity

Cable capacity and inductance see HART standard

specifications. (e.g. C < 100 nF).

Impedance of other devices at the input (parallel or serial)

must be within HART spec.

Applications without communication require not to exceed

input capacitance parallel to the input not higher than 100 µF.

Start-uptime ............approx. 3 sec

Interruption time without power down:

withLCD .............typ.80ms

1) On request we can specify higher voltage limits

2) Worst case conditions 4-20 mA, with position feedback option, i/p-output

with max. current

Configuration

The SRD991 can be configured via HART by any host

system whatever is a PC with a HART Modem, Hand Held

Terminal or a DCS.

LOCAL (by means of local key pad and LCD display)

See page 6

DTM (Device Type Manager)

Foxboro is a leading company in term of FDT-DTM

technology

http://www.fdtgroup.org/product-catalog/certified-dtms?com

pany=Foxboro+Eckardt+GmbH&field_device_type_value_

many_to_one=All&field_protocol_value_many_to_one=All

Therefore we provide a DTM fully certified for its inter-

operability and with the state-of-the-art presentation and

diagnostics features.

The DTM can be downloaded from our homepage

http://www.foxboro-eckardt.eu/download/FDT-DTMselector.

html

DD (Device Description) and EDD (Enhanced

Device Description)

In case the host system is not supporting the FDT-DTM

technology, you can download the DD and/or EDD from our

homepage

http://www.foxboro-eckardt.eu/download/EDDselector.html

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