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3.7.3.1 Intrinsic safety parameters of the serial interface of the DL230
Highest voltage which is permitted to be applied to the data lines, and cur-
rent limitation on the data lines.
Connector
+Usio
RI, DCD, RXD
3.7.3.2 Technical Data of the RS485-Interface of the DL230
Parameter
Mode of operation
Termination
Maximum data rate
Number of remote termi-
nals
3.7.4 GSM / GPRS modem module
The modem module can be used if the DL230 is not equipped with an inte-
grated modem and if it is only used in the safe area or in ATEX zone 2.
Data
Modem type
Frequency bands
1
Unit Load: Standard RS-485 Receiver with input resistor = 12 kOhm
2
See application manual for details of RS-485 interface connection
Voltage
U
= 12,5 V
max
≤ 24 V
U
i
Value
RS485 2-Draht (half duplex)
RS485 4-Draht (full duplex)
Do not use termination resistors at the remote
terminals.
19.200 Baud
Driver output power: max. 16 Unit Loads
Input power consumption
- 6 Unit Loads (RS485, not. insulated)
- 3 Unit Loads (RS485, electrical insulated)
Value
2G: GSM / GPRS
3G: GSM / GPRS / UMTS
2G: 850 /900 /1800 /1900
3G: 850 /900 /1800 /1900 /2100
Technical data
Current
≤ 90 mA
I
i
2
:
Unit
MHz
1
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