BusWorks
Model 903MB/902MB/901MB Network I/O Module User’s Manual Digital I/O
___________________________________________________________________________________________
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5.6K
I/O
N.C.
V
RTN
903MB
ONLY
100K
OTHER THREE
CHAN OF PORT
CH
R
ADJUST VOLTAGE (V) AS
REQUIRED TO CHANGE
EXCITATION CURRENT( I)
OR CHANGE SIP RESISTOR
VALUE.
CH LED IS ON FOR
ACTIVE-LOW INPUT
ON 903MB UNITS, MAKE
SURE OUTPUT IS OFF (0)
FOR INPUT ONLY UNITS.
RTN
N.O.
DRY-CONTACT RELAY CONNECTIONS - NORMALLY CLOSED
I/O
EXC
V
EXC
I
5.6K
DRY-CONTACT RELAY CONNECTIONS - NORMALLY OPEN
SIP INSTALLED
+5V
901MB & 903MB
ADJUST VOLTAGE (V) AS
REQUIRED TO CHANGE
EXCITATION CURRENT( I)
OR CHANGE SIP RESISTOR
VALUE.
SIP INSTALLED
901MB & 903MB
+5V
100K
OTHER THREE
CHAN OF PORT
903MB
ONLY
R
CH
CH LED IS ON FOR
ACTIVE-LOW INPUT
ON 903MB UNITS, MAKE
SURE OUTPUT IS OFF (0)
FOR INPUT ONLY UNITS.
MODEL 901MB-0900, 902MB-0900, 903MB-0900
PAGE 3 OF 4
ELECTRICAL CONNECTIONS
LED
V
902MB/903MB
OFF
ON
TO OTHER 3
CHAN OF PORT 100K
I/O
RTN
SOLID-STATE RELAY (SSR) OR LED DRIVER
N.O.
R
SIP RESISTOR
INSTALLED
IN SOCKET
5.6K
EXC
903MB
+5V
ON
OFF
R
CH
4501-813A
5-35V
V
RTN
I/O
902MB/903MB
ON
TO OTHER 3
CHAN OF PORT 100K
SIP RESISTOR
INSTALLED
IN SOCKET
ON
OFF
R
CH
OFF
5-35V
RELAY COIL/SOLENOID DRIVER
V
INCANDESCENT LAMP CONTROL
EXC
5.6K
SIP RESISTOR
INSTALLED
IN SOCKET
903MB
+5V
ON
EXC
5.6K
RTN
100K
TO OTHER 3
CHAN OF PORT
ON
902MB/903MB
OFF
R
CH
OFF
903MB
+5V
ELECTRICAL CONNECTIONS
RLIM IS INCLUDED TO
PROTECT DRIVER IF
TANDEM OUTPUT IS
INADVERTANTLY
TURNED ON.
5V
OFF
ON
LIM
R
ON
I/O
TO OTHER 3
CHAN OF PORT 100K
OFF
903MB
RTN
ON 903MB, KEEP OUTPUTS
TURNED OFF TO MONITOR
EXTERNAL LOGIC SIGNAL
EXC
LOGIC (TTL) MONITOR (901MB & 903MB ONLY)
5.6K
SIP RESISTOR
INSTALLED
IN SOCKET
+5V
901MB or 903MB
ON
OFF
R
CH
MODEL 901MB-0900, 902MB-0900, 903MB-0900
PAGE 4 OF 4
4501-813A
