GAI-Tronics 12576-504 Rack-Mount System Status panel with LCD Display - Manual (Page 3)

Pub. 42004-436C
Model 12576-504 ADVANCE Rack-Mount System Status Panel with LCD Display Page: 3 of 9
f:\standard ioms - current release\42004 instr. manuals\42004-436c.doc
01/12
Field Wiring
TX/RX Data
The modular terminal block labeled +/− TX/RX at the rear of the system status panel provides connection
for the data line to the API connection module (or DIN terminal blocks) at the ADVANCE system control
cabinet.
A twisted pair cable (minimum Category 3) should be used for this connection. Observe cable conductor
polarity (+/−) when making connections at the control cabinet: (+ connects to + and − connects to −). No
damage will occur if the polarity is reversed, but the system status panel will not function.
If installing this panel external to the ADVANCE System control cabinet, the maximum cable distance to
the cabinet is 3 km when using No. 24 AWG (Category 3) cable. Refer to Figure 3 for terminal block
location and Table 1 for additional details.
Table 1. Data Terminal Assignment
Label
Internal Terminal
Number
Function or ACT Description
+ TB1-1
Positive terminal of data line connection
(to designated + terminal at API connection module)
− TB1-2
Negative terminal of data line connection
(to designated − terminal at API connection module)