Ec 32 (Three-Wire Pnp) For Dc - Endress+Hauser nivocompact FTC 731 Installation And Operating Manual

Nivocompact FTC 731
Transistor Circuit for Load
Protection Against Voltage Peaks
Fig. 13
Connecting the Nivocompact with electronic
insert EC 32 (PNP)
F: Fine-wire fuse, load-dependent
R: Connected load, e.g. PLC, PCS, relay
M: Ground connection to silo or metal parts
near to the silo
E: Grounding
14
Connecting the Nivocompact with Electronic Insert EC 32
(Three-Wire PNP) for DC
The load connected to Terminal 3 is switched by a transistor, contactless
and therefore without bouncing.
Terminal 3 has a positive signal in normal switching mode.
The transistor is blocked on level alarm or with a power failure.
Connecting to an instrument with a high inductance:
a voltage limiter should be connected.
Connection