Cover Jam Screw; Connections; Figure 3. Connector Board Mounted In Base Of Enclosure; Figure 4. Connectors & Switches On Rear Of Display Module - YOKOGAWA YPP6830-AP0-0 Instruction Manual

YPP6830 Explosion-Proof Pulse Input Rate/Totalizer

Cover Jam Screw

The cover jam screw should be properly installed
once the meter has been wired and tested in a safe
environment. The cover jam screw is intended to
prevent the removal of the meter cover in a
flameproof environment without the use of tools.
Using a M2 hex wrench, turn the screw clockwise until
the screw contacts the meter. Turn the screw an
additional ¼ to ½ turn to secure the cover. Caution:
Excess torque may damage the threads and/or
wrench.

Connections

To access the connectors, loosen the cover jam
screw (if tightened) with an M2 hex wrench, remove
the enclosure cover and unscrew the two captive
screws that fasten the display module into the
enclosure. Disconnect the ribbon cable and remove
the display module.
RS-485 serial connections are made to a removable
terminal block on the back of the display module.
Power and signal connections are made to a screw
terminal connector in the base of the enclosure.
Grounding connections are made to the two ground
screws provided on the base – one internal and one
external. Use proper grounding techniques for
explosion-proof areas and observe all local and
national electric codes.
S+ Input signal positive terminal connection
S- Input signal negative terminal connection
COM DC power supply input return/negative,
reset contact closure common
RST Contact closure reset pull-up to 1.8 VDC
P+ DC Power positive terminal connection
LP+ 4-20 mA transmitter DC power positive
terminal connection.
LP- 4-20 mA transmitter regulated current
output terminal connection
OC1+ Open collector output 1 positive terminal
OC1- Open collector output 1 negative terminal
OC2+ Open collector output 2 positive terminal
OC2- Open collector output 2 negative terminal
Refer to Figure 3 and Figure 4 for terminal positions.
•
Observe all safety regulations. Electrical wiring
should be performed in accordance with all
agency requirements and applicable national,
state, and local codes to prevent damage to the
meter and ensure personnel safety.
•
Static electricity can damage sensitive
components.
•
Observe safe handling precautions for
static-sensitive components.
•
Use proper grounding procedures/codes.
•
If the meter is installed in a high voltage
environment and a fault or installation error
occurs, high voltage may be present on any lead
or terminal.
Board to Board
Interconnect
Battery (if ordered)
Figure 3. Connector Board Mounted in Base of
Enclosure
Figure 4. Connectors & Switches on Rear of Display
13
Instruction Manual
Module