4-channel transmitter 7470 with serial data RS-485/232 input0 pages

Nokeval

www.nokeval.com
sakes@nokeval.com

Yrittäjäkatu 12
FIN-37100 Nokia

Tel.
Fax.

+358-3-3424800
+358-3-3422066

4-channel transmitter 7470 with serial data
RS-485/232 input
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4 output channels 0..20mA 4..20mA 0..5V and 0..10V
Serial data input RS-232 and RS-485
Simple Nokeval SCL protocol
Configuration with a hand held programmer 6790
or by MekuWin program via serial bus
• DIN-rail mounting (35mm)
• Power supply 18..28 VDC

The transmitter 7470 provides an economical means of
converting digital data to analog signals, mA / V, and
transmitting them to four field instruments. Configuration is
simple by MekuWin program or the general purpose hand
held programmer 6790. The transmitter uses the simple
Nokeval SCL protocol. One serial data bus accepts 31
7470 transmitters or other serial instruments, that is 124
output channels. Typical applications are PC-based
programs or PLC.
Serial data converter
RS485 / RS232
(711 or 721)

Technical specification:
Current output:
Outputs
Max. load
Common negative wire

0..20mA, 4..20mA
600 Ω

Serial bus RS-485
RS-232
Address
1

Address
2

7470
Voltage output:
Outputs
Max. load
Common negative wire

0.1% of span
0.06% of span
0.005% of span / °C

7470

0..5V, 0..10V
1mA

Accuracy
Linearity
Temperature effect

WinX

Response time of output
4.7ms + response time 67% of end value
12.5ms +response time 93% of end value
150ms +response time 100% of end value
RS-485/RS-232 input
Both selectable in terminals
Galvanically isolated from outputs
Nokeval SCL protocol

4 channels

4 channels

Outputs:
0/4-20 mA
or 0-5/10V

Outputs:
0/4-20 mA
or 0-5/10V

General:
DAC conversion
Power supply
Power consumption
Power demand
IP protection
Mounting
Weight

12-bit (resolution 4096)
18..28VDC
30mA…110mA
max 2.6 W
20
DIN-rail (35mm)
140g