THIS EQUIPMENT IS SUITABLE FOR USE IN CLASS I DIVISION 2 GROUPS A,B,C AND D HAZARDOUS LOCATIONS, OR NONHAZARDOUS LOCATIONS ONLY.
915U-D20-900/2400 Serial Data Radio
FCC Notice
Antenna connection (SMA Female)
This device complies with Part 15.247 of the FCC Rules.
Operation is subject to the following two conditions:
·
·
This device may not cause harmful interference and
This device must accept any interference received,
including interference that may cause undesired operation
9-30V
DC Supply
Antenna Installation
SURGE
ARRESTOR
(OPTIONAL)
Power Source
1 Wavelength
minimum
Wavelengths
900 MHz = 33 cm
2.4GHz = 13 cm
RF Link Fail
COLINEAR
ANTENNA
RS232 (DB9) connections
WEATHERPROOF
CONNECTORS WITH
“3M 23” TAPE
DTE Device (Computer)
RxD (Pin 2)
TxD (Pin 3)
GND (Pin 5)
RTS (Pin 7)
CTS (Pin 8)
STRESS RELIEF
LOOP
COAXIAL CABLE
MAST
MODULE
PROVIDE GOOD GROUND
CONNECTION TO MAST,
MODULE AND SURGE
ARRESTOR
INSTALL ANTENNA ABOVE
LOCAL OBSTRUCTIONS FOR
MAXIMUM RADIO DISTANCE
EARTH terminal on
bottom of module
·
·
·
·
·
·
·
·
·
Notes
WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT WHILE THE
CIRCUIT IS LIVE OR UNLESS THE AREA IS KNOWN TO BE FREE OF IGNITABLE
CONCENTRATIONS.
WARNING - EXPLOSION HAZARD - SUBSTITUTION OF ANY COMPONENT MAY IMPAIR
SUITABILITY FOR CLASS I, DIVISION 2.
Module can be powered using either an external Listed Power Supply with LPS Outputs
or a Listed Battery Pack with LPS Outputs. Only one power source can be used at a time.
Single Point „EARTH‟ termination on bottom plate of module for surge protection
RS485 End Point Termination is configured via Webpage interface
X - The device as shipped provides IP20 protection only. For the higher protection
levels the device must be installed in the adequate enclosure.
"THE USB CONNECTOR IS FOR TEMPORARY CONNECTION ONLY. DO NOT USE,
CONNECT, OR DISCONNECT UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS.
CONNECTION OR DISCONNECTION IN AN EXPLOSIVE ATMOSPHERE COULD RESULT
IN AN EXPLOSION."
DIN Rail Mounting Clip
To mount Clip – insert the two keyed tabs into the available slots on the back of the
module (Clip can only be mounted one way). Press firmly until the Clip clicks into place.
To remove Clip - Insert a flat blade screwdriver into the slotted holes on each side of the
module so that the screwdriver is perpendicular to the slot. Press lightly to release the
Clip.
DCE Device (PLC)
RxD (Pin 3)
TxD (Pin 2)
GND (Pin 5)
RTS (Pin 8)
CTS (Pin 7)
915U-D Terminals
232 TX (Term 7)
232 RX (Term 8)
GND (Term 9)
CTS (Term 5)
RTS (Term 6)
RS485 connections
IF GROUND CONDITIONS
ARE POOR, INSTALL
MORE THAN ONE STAKE
inst_Elpro_915U-D_1.1.3.vsd
Lamp
Enclosure Chassis
Protective Surge Earth
#
Name
1
PWR
2
CMN
3
RLY A
4
RLY B
5
CTS
6
RTS
7
232 TX
8
232 RX
9
GND
10 485 (+)
11
485 (-)
12
GND
915U-D Terminals
#
Name
1
PWR
2
CMN
3
RLY A
4
RLY B
5
CTS
6
RTS
7
232 TX
8
232 RX
9
GND
10 485 (+)
11
485 (-)
12
GND
915U-D Terminals
#
Name
1
PWR
2
CMN
3
RLY A
4
RLY B
5
CTS
6
RTS
7
232 TX
8
232 RX
9
GND
10 485 (+)
11
485 (-)
12
GND
915U-D Terminals
RS485 (+)
915U-D-900/2400 RSSI
RS485 (-)
*
*
GND
Voltage
Fade Margin
* Cable lengths over 10m should only be grounded at one end only.
3.25
40dB
3.00
35dB
Sealed Relay
2.75
30dB
WARNING – Exposure to some chemicals may
2.5
25dB
degrade the sealing properties of materials
USB Mini-B
2.25
20dB
used in the Sealed Relay Device.
2.0
15dB
Programming
RECOMMENDATION - It is recommended to
1.75
10dB
port
inspect the sealed relay device periodically and
1.5
5dB
to check for any degradation of the materials
1.25
0dB
and to replace the complete product, not the
Connect Volt Meter across RSSI and GND Pins.
sealed device, if any degradation is found.
Recommended minimum is 2.0v which is equivalent to a 15dB Fade Margin