HART MODEM
User s manual'
UNICOMM SAT-504
HART/USB BLUETOOTH MODEM
Thank you for choosing a NIVELCO instrument.
We are sure that you will be satisfied throughout its use!
1. APPLICATION
The UNICOMM SAT-504 modem establishes communication between HART®-capable field devices and a
process controller computer. The UNICOMM HART®modems are applicable for all HART®-capable
transmitters that use standard HART®communication.
Depending on the design the following versions can be ordered:
– HART®/USB modem, normal type;
– HART®/USB modem with power supply for transmitter and switchable HART®terminal resistor;
– HART®/USB modem with power supply for transmitter, switchable HART®terminal resistor and
Bluetooth®interface.
The modem ensures galvanic isolation for the transmitter from the process controller system and it is
powered by a USB interface or a USB power bank.
2. TECHNICAL DATA
2.1 GENERAL DATA
Power Supply USB interface or
USB power bank
HART current loop power supply 24 V DC ±5% max. 22 mA
HART terminal resistor 250 Ωswitchable
Bluetooth version 2.1
Bluetooth name, Pairing code SAT504-BT, 1234
Current consumption from USB <150 mA
Power consumption from USB <1 W
Ambient temperature -25 C … +55 C
(+77 F … +131 F)
Housing material Polystyrene
Connection to PC USB 1.1 “B” socket
Cable to PC USB “A-B” 1.8 m (5.9 feet)
Connection to HART line KLEPS2 spiral 1.1 m (3.4 feet)
Ingress protection IP20
Electrical protection Class III 1 kV galvanic isolation
Mass 0.1 kg
2.1 ACCESSORIES
– User’s Manual
– Warranty Card
– Declaration of Conformity
– USB “A-B” cable 1.8 m (5.9 feet)
2.2 ORDER CODE
UNICOMM SAT-504-
HART®normal type 0
HART®+ transmitter power
supply 1
HART®+ transmitter power
supply + Bluetooth®2
2.4 DIMENSIONS (IN MM)
40
Ø9,5
3
22
79
3. COMMUNICATION OPTIONS
The modem meets the HART®communication standards and applicable for all
HART®-capable transmitters that use standard HART®communication.
To enable communication through the USB 1.1. or USB 2.0. port of the PC a
driver program (FT 232 RL) is needed. This driver can be downloaded from the
CD-ROM containing the EView2 program package provided to all NIVELCO
transmitters purchased with HART®option. The program can also be downloaded
from the http://ftdichip.com website.
4. WIRING, OPERATION
The modem should be connected to a HART®field device by 2 pieces of KLEPS2
measuring clamps. The SAT-504 does not have surge protection, thus use of an
adequate lightning protection that does not affect standard HART®signal
transmission is advised.
USB / 5 V
POWER BANK
UNICOMM SAT-504-2
4.1 HART®/USB INTERFACE FUNCTION (FOR ALL TYPES:SAT-504-0, 1, 2)
The clips should be positioned in accordance with polarity. When the USB cable
and the clips are connectected to the PC, the modem turns on, and switches to
the basic state marked with an asterisk (*). The following states are displayed
during operation:
Stby/ON
Tx/Rx
HART IF.
ON
Tx/Rx
(+) Red
(–) Black
Current
loop
USB- HA RT M ODEM
Interface LED
Name State
USB
not lit turned off (inactive mode)
Stby/ON yellow turned on (standby mode)
* green turned on (active mode)
TX/RX
red PC send
green PC receive
* not lit no data transfer
HART®
ON not lit turned off (inactive mode)
* green turned on (active mode)
TX/RX
red transmission to HART®
green reception from HART®
* not lit no data transfer
