December 2004
45774
IQ plus
®
355 Digital Weight Indicator
Analog Output Option
PN 43381
IQ plus 355 Analog Output Module Installation
To install or replace the analog output module, ensure
power to the indicator is disconnected, then place the
indicator face-down on an antistatic work mat. Loosen
all in-use cord grips and remove the screws that hold
the backplate to the enclosure body. Lift the backplate
away from the enclosure and set it aside.
Use a wrist strap to ground yourself and
protect components from electrostatic
discharge (ESD) when working inside
the indicator enclosure.
NOTE:
Ensure jumpers JP1 and JP2 on analog output
board are installed in position 1 (POS1) as shown in
Figure 1.
Mount the analog output module on its standoffs in
the location shown in Figure 1 and plug the module
input into connector J5 on the IQ plus 355 board.
Connect output cable to the analog output module as
shown in Table 1, then reassemble the enclosure as
described on page 2.
Table 1. Analog Output Module Pin Assignments
Figure 1. Analog Output Module Installation on IQ plus 355 Board
Caution
Pin
Signal
1
+ Current Out
2
– Current Out
3
+ Voltage Out
4
– Voltage Out
Tr a n s f o r m e r
BR1
C23
VR1
JMP4
C24
MECCA1
C66
DIGITAL
+5V
TEST
J4
1
2
3
4
5
6
7
SERIAL COMM & DIGITAL IN
EDPT
GND
EDPR
PRMA
PR
T
IN2
IN1
F2
F1
Blue wire
JP4
ANALOG
GND
ANALOG
+5V
TEST
ANALOG
–5V
TEST
+
+
GND
GND
JP1
JP2
+
VR2
C25
+
VR3
C67
+
–
+
Keypad Connector
J7
EEPROM
A / D C o n v e r t e r
JP7
Brown wire
Microprocessor
X2
LED
DRIVER
LED
DRIVER
U4
U5
To setup switch
ON
OFF
SET/ISP
J1
–EXC
+EXC
–SENSE
+SENSE
–SIG
+SIG
6
5
4
3
2
1
LOAD CELL CONNECTOR
J5
ANALOG OUTPUT
ANALOG OUTPUT
MODULE
JP1
JP2
POS1 POS2
J1
4
3
2
1
POS2
POS1
