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INTERFACE MODEL 9840 VER 6.0.2
Digital I/O Connector
Notes:
High Density 26 Female
Pin Signal
1 LIM 1 A
1
2 LIM 1 B
1
3 LIM 2 A
4 LIM 2 B
5 LIM 3 A
6 LIM 3 B
7 LIM 4 A
8 LIM 4 B
9 ISO IN 1 - HI
2
10 ISO IN 1 - LO
2
11 ISO IN 2 - HI
12 ISO IN 2 - LO
13 ISO IN 3 - HI
14 ISO IN 3 - LO
15 ISO IN 4 - HI
16 ISO IN 4 - LO
17 KEYLOCK
3
18 GND
19 ENCODER CHA-L
4
20 ENCODER CHA
21 GND
22 ENCODER CHB-L
23 ENCODER CHB
24 GND
25 GND
26 +12 VDC
(+5 VDC optional
4
)
1. Limits are optically isolated solid state switches
that can control AC or DC voltage. Peak blocking
voltage is 350V, maximum continuous current is 120
mA.
2. Digital inputs are opto-isolated with internal
current limiting resistors. Voltage range is +4 to +22
VDC on the “HI” input with respect to the “LO” input.
Other voltage ranges are possible with added
external resistors, contact Interface for details. If
isolation is not required these inputs may be
operated using the +12 VDC supplied on pin 26 and
the GND on pin 24.
3. The keylock input will be in the “unlocked” state if
left unconnected. Tie this pin to GND to “lock” it.
When locked the setup of the Model 9840 cannot be
changed (you cannot enter Setup mode).
4. The encoder inputs are intended for use with a
+12 VDC quadrature encoder. For single ended
signaling use the CHA and CHB pins, the CHA-L
and CHB-L pins are provided for differential signals.
The encoder can be supplied with the +12 VDC and
GND available on pins 26 and 24.
The Model 9840 will also accept +5 VDC encoder
inputs but these MUST be differential. Single ended
+5 VDC inputs are not supported on the standard
unit. Options for +5 VDC encoders are available.
Pin 26 will supply +5 VDC for this option and must
be ordered accordingly.
Chart Rec. Connector
Notes:
1. The source and scaling of ANALOG -
OUT is selected through the menus.
2. The HIGH BANDWIDTH - OUT is a
buffered analog output permanently
connected to the load cell channel.
3. If the 4-20 mA Option is purchased.
MODEL 9840 PG 56 PUB. 2856-16
DB9 Male
Pin Signal
2 ANALOG - OUT
1
3 ANALOG - GND
4 HIGH BANDWIDTH - OUT
2
CHANNEL A
5 4-20 mA – OUT
3
CHANNEL A
6 2
nd
ANALOG-OUT
1
(Optional)
7 4-20 mA – OUT
3
CHANNEL B
8 HIGH BANDWIDTH - OUT
2
CHANNEL B
9 No Connect