GF SIGNET 9900 Bedienungsanleitung Seite 14

Relay and Open Collector Wiring
Open Collector Wiring
NPN Style Wiring
PWR +
PWR –
Loop +
Loop –
OC –
PNP Style Wiring
PWR +
PWR –
Loop +
Loop –
OC –
With NORMAL set to OPEN.
PWR +
PWR –
Loop +
Loop –
OC –
• The 9900 Open Collector (R1) output provides high-speed switching capability.
Signal frequencies can reach 400 pulses per minute.
• The 9900 Open Collector (R1) output connection is dependent upon the type of
circuit being controlled by the output.
• Most indicating instruments or control system inputs require a signal voltage of
0 to 5 V (TTL or CMOS logic levels) or 0 to 24 V.
Therefore, the 9900 Open Collector output circuits must be equipped with a pull-up or
pull-down resistor (not supplied), and a quality regulated 5 to 24 V (depending on the
application) power supply (not supplied) is recommended to function properly.
14 9900 Transmitter Start-Up Guide
Pull-Up Resistor
Power
Supply
Gnd
OC+
Input
PLC
Gnd
Input
OC+
Gnd
+5V to +24V
Power Supply
Gnd
Pull-Down Resistor
Alarm
V+
OC+
Gnd
If PLC needs 0 logic input
when relay is not energized,
set NORMAL to CLOSED in
the RELAY menu when using
the Open Collector (R1) with
NPN style wiring.
PLC
Power
Supply