Ohaus I150-S Indicator - Manual (Page 11)

11
Digital Output Connections Digital Output Connections Digital Output Connections Digital Output Connections Digital Output Connections
Digital outputs are provided for check-
weighing and filling applications where
the I150 will be used to control other
devices. Refer to
“Checkweighing” and
“ Filling and Emptying Processes” in t he
OPERATION section of this manual for
instructions on using these features.
The digital outputs are accessed via a 4-
pin header which is located on the compo-
nent side of the display circuit board (see
diagram).
Use the setpoint connector provided in
the accessory kit, and a suitable cable for
connecting to the header. The cable must
be round to fit properly through one of the
liquid tight connectors.
1. Locate the 4-pin header on the dis-
play circuit board.
2. Pass the cable through any free liq-
uid tight connector.
3. Connect the cable wires to the socket
connector according to the pin con-
nections shown in the table.
4. Plug the setpoint connector into the
4-pin header on the display circuit
board. Make sure the connector is
properly oriented.
5. Tighten the seal bushing until resis-
tance is felt against the cable.
Output Specifications Output Specifications Output Specifications Output Specifications Output Specifications
Test
Parameter Conditions Value
V
OH
I
OH
= -2mA max. 2.4 V min.
V
OL
I
OL
= 16mA max. 0.5 V max.
Outputs are ACTIVE LOW: LED is ON,
when output is LOW (V
OL
)
Display
Circuit
Board
Header is on
component
side of circuit
board.
APPLICATION
Pin Checkweighing Filling/Emptying
1 UNDER DRIBBLE
2 GND GND
3 OVER PREACT
4 ACCEPT TARGET
PIN CONNECTIONS
475 ohms
+5V
LED
DIGITAL
OUTPUT
PIN