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YPP6830 Explosion-Proof Pulse Input Rate/Totalizer
External Total Reset Connection
External total reset connections are made between
RST and COM. Connect to a contact closure source
such as a relay or a pushbutton as shown in Figure 12.
Avoid extended contact closure to preserve battery life.
The total is reset when the button is pressed. The
meter will start to totalize immediately. Holding down
the button has no effect on the total.
COM RST+
Figure 12. Reset Connections
4-20 mA Transmitter Output
Connections
Output connections are made to two terminals labeled
LP+ and LP-. Connect to an input device such as a
remote display or chart recorder as shown in Figure 13.
4-20 mA Input
Device
LP-
Figure 13. 4-20 mA Output Connections
+3.0 V
100 kOhm
Internal Pullup
S+
S-
Power
Supply
LP+
RS-485 Serial Connections
The meter may include an optional RS-485 two-wire
serial connection. The cabling used for an RS-485
serial communications network should always be a
high quality cable such as Belden 8162 or Alpha
6203C. A two-wire system requires two twisted pairs,
and a four-wire system requires three twisted pairs
(the extra twisted pair is needed for the signal
ground).
YPP6830
D+
D-
G
Figure 14. RS-485 2 Wire Serial Connections
Figure 15. RS-485 4 Wire Serial Connections
Open Collector Output Connections
Open collector output 1 and 2 connections are made to
terminals labeled OC1+ and OC1-, and OC2+ and
OC2-. Connect the alarm or pulse input device as
shown in Figure 16.
Figure 16. Open Collector Output Connections
15
Instruction Manual
RS-485 DEVICE
D+
D-
G
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Troubleshooting
