RLE LD2100 V.2.6 - Manual (Page 16)

16 LD2100 User Guide 800.518.1519
2 Installation
The three contacts on TB3 are labeled NO, C, and NC. Connect the alarm relay wires to TB3
as follows:
TB3-1 Leak alarm normally open (NO)
TB3-2 Leak alarm common (C)
TB3-3 Leak alarm normally closed (NC)
Both relays (all alarms) can be configured to be latched or unlatched. A latched alarm requires
a manual reset of the system once a leak or cable problem is no longer present.
P4: EIA-232 Connector
The EIA-232 uses a baud rate of 9600. The EIA-232 port is set to 8 databits, no parity, and 1
stop bit (8, N, 1). A straight through cable should be used to connect a terminal or PC to the
LD2100. This connection should only be used for setting the IP address, using advanced
diagnostics, uploading firmware, and troubleshooting. Detailed IP configuration instructions
can be found in Section 2.7., “Configure Communication through the Ethernet Port” on
page 20 .
SW3: EIA-485 Termination
Switch SW3 is used when the LD2100 is the last unit on a EIA-485 network. Switch SW3 on
(push to the down position) to place a termination resistor across the + and - terminals of the
EIA-485 port.
TB4: EIA-485 Modbus Port
TB4 connects to an EIA-485 network. A grounded shield contact is provided for connection to
shielded cable. If the shield contact is used, verify the power connector is properly grounded
and there is no voltage potential between units on the network. The EIA-485 port has a
selectable baud rate (9600, 19200, or 38400) and is set to 8 databits, no parity, and 1 stop bit
(8, N, 1). Connect the EIA-485 wires to TB4 as follows:
TB3-1 A (+)
TB3-2 B (-)
TB3-3 Shield
P3: RJ45 Network
A 10/100 BaseT Ethernet connection allows the LD2100 to connect directly to a local area
network. Use a crossover cable (shipped with the LD2100; blue cable with yellow ends) for
initial connection and configuration. The default settings are as follows:
IP Address: 10.0.0.188
Subnet Mask: 255.255.255.0
2.4. Mount the LD2100
The LD2100 is a wall mounted device. Using the wall mount kit (screws and reinforcers,
included) or the LD-ENC wall-mountable enclosure (sold separately), mount the device to the
wall in a convenient location.