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Power supply connection
Connect 9–28 V AC/DC to Vin+ and Vin- terminals. The power requirement of
SREA-01 is 2 W.
Some drives have an internal 24 V DC power supply that can be used to power
SREA-01. See the drive manuals for more information. However, it is recommended
to use external power supply to power SREA-01.
Digital inputs
SREA-01 has two digital inputs. The inputs can be used to trigger alarms and their
status can be shown on custom pages, for example. Their status can also be read by
Modbus/TCP by enabling the Internal module registers via Modbus/TCP. See
Appendix B: Internal Modbus registers
The digital inputs are opto-isolated, and can accept a 10...24 V DC signal for logic
HIGH input. For logic LOW the voltage should be in the range of 0...2 V DC.
Ethernet interface
The Ethernet interface supports 10/100 Mbps, using a standard RJ-45 connector.
When connecting SREA-01 to a hub or switch, use a standard, straight RJ-45
network cable (Cat 5 or better).
Connecting a GSM/GPRS modem
In locations without Ethernet connection, SREA-01 can communicate by using a
GSM/GPRS or even analog modem. The GSM/GPRS modem can be used to
• send SMS alarms,
• connect to Internet for sending E-mails with log files or alarm information,
• connect to Internet for sending log files by FTP,
• connect to Internet to provide access to the web monitoring pages of the module.
1)
SMS alarming is not supported when the connectivity method is "Always
Connected to Internet" over modem line.
For GSM/GPRS connectivity, see chapter
The modem is connected to the X2 RS-232 port by using a typical straight, male-
female DB9 modem cable. Please refer to the manual of the modem for more
information about connecting the modem and section
information about setting up the modem configuration.
for more information.
1)
Appendix A: Technical
specifications.
Modem
on page
66
for more
Electrical installation
27
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