P
RO
V
U
™ PD6402 High Voltage & mV to Current Meter
Instruction Manual
16
mV and High Voltage Input
The following figures show examples of connecting the
meter for both mV and voltage input. Note that in
addition to the connections, the AC/DC type switch
much also be set.
Figure 16. mV and High Voltage Connections
Figure 17. DC Current Shunt and Voltage
Connections
Figure 18. DC mV and High Voltage Connections
Modbus RTU Serial
Communications
Serial communications connection is made to an
RJ45 connector labeled M-LINK. For interfacing to the
P
RO
V
U
, use the PDA1232 for RS-232 or the PDA1485
for RS-485. The same port is used for interfacing with
all expansion modules (
e.g.
external relays, digital
I/O).
Relay Connections
Relay connections are made to two six-terminal
connectors labeled RELAY1
– RELAY4. Each relay’s
C terminal is common only to the normally open (NO)
and normally closed (NC) contacts of the
corresponding relay. The relays’ C terminals should
not be confused with the COM (common) terminal of
the INPUT SIGNAL connector.
Figure 19. Relay Connections
INPUT SIGNAL
V+
V-
3
4
1
2
COM
F4
1
2
TYPE
AC
DC
mV AC
HOT NEUTRAL
V
AC
mV-
mV+
INPUT SIGNAL
V+
V-
3
4
1
2
COM
F4
1
2
TYPE
AC
DC
DC CURRENT
SHUNT
V
DC
mV-
mV+
INPUT SIGNAL
V+
V-
3
4
1
2
COM
F4
1
2
TYPE
AC
DC
mV DC
V
DC
mV-
mV+
C
NO
NO
NC
NC
C
RELAY4
RELAY3
4
3
6
5
2
1
C
NO
NO
NC
NC
C
RELAY2
RELAY1
4
3
6
5
2
1
