16 MODBUS-GW Installation and Operation Manual — P/N LS10015-000NF-E:C2 4/30/2019
Installation Connections
2.3 Connections
2.3.1 Connecting the MODBUS-GW
Figure 2.5 MODBUS-GW Connections
Table 2.1 Connection Specifications
Reference
Designator
Description
Circuit
Class
Specifications
TB2 DC Power 2 Power Source - FACP or UL 1481 listed 24 VDC regulated power supply
Nominal Voltage: 24 VDC, Regulated
Current: 125 mA
Locate in same cabinet or use close nipple fitting
J1 USB B 2 Locate in same cabinet or use close nipple fitting
J2 USB A 2 Locate in same cabinet or use close nipple fitting
J3 Ethernet 2 Line Impedance 100 ohm
Max Distance 328.083 ft. (100 m)
J4 NUP A 2 RS-232
Locate in same cabinet or use close nipple fitting
• All wiring from the power supply is power limited, and a separation of at least 1/4-inch (6.35 mm) must be maintained between
power limited and non-power limited wiring.
• All interconnects are power limited.
• Ethernet connections are power limited and supervised except for ground faults.
NUP A
Connector (J4)
USB “B” Device (J1)USB “A” Host (J2)
Not Used (J5)
Not Used
Mounting Hole
(1 of 12)
-
24 V Out
24 V In
+
-
+
Ethernet
Connector (J3)
(TB2)
(TB1)
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