Emerson Process Management GFC, MICRO Regulated 24V Supply Distribution Connector TB2, Power LED

8-Pin Connector (TB2) accommodates distribution of the regulated +24V loop supplies.

Table 2 - Regulated 24V Supply Distribution Connector TB2

TB2 Pin #	Signal Name
1, 3, 5, 7	+24V
2, 4, 6, 8	24V Return

Description Regulated +24Vdc Reg. 24V Return

•Configuration Jumper JP1

Jumper JP1 is used to set the input voltage range, i.e., 9V to 30V (nominal 12V input) or 19V to 30V (nominal 24V input). Under Voltage Lockout Point circuitry sources current to affectively lower the ON and OFF switch points.

The nominal setting operating range switch points for the Loop Supply (by design) are provided below.

JP1 - 1 to 2:

JP1 - 2 to 3:

12V Input: ON above 8.4V (Max. ON = 8.8V), OFF below 8.24V (Min. OFF = 7.8V) (Factory Configuration)

24V Input: ON above 18.8V, (Max. ON = 19.7V), OFF below 18.4V (Min. OFF = 17.4V

•Power LED

Red LED (CR10) will be ON when regulated 24V is present. When lit, CR10 indicates that the Loop Supply is operational.

•Fuse F1

Fuse F1 (2A Slow Blow 5 x 20 mm) provides protection for the LOOP Supply and the as- sociated field I/O (powered by Loop Supply). If a short circuit should occur in I/O field wiring or circuitry within the Loop Supply, F1 will blow and the regulated 24V output will switch OFF. Note: Power Pass-through is not fused since the ControlWave

GFCs/RTUs provide their own fuse protection.

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