15
OIDMANUAL 1219
KAM CONTROLS, INC.
3.3
VD
C
O
FF
SE
T
-5
VD
C
G
AI
N
5V
D
C-
D
5V
D
C-
A
TP
5
TP
2
G
N
D
TP
7
TP
1
TP
3
TP
4
3939 ANN ARBOR DRIVE
HOUSTON TX - 77063
Tel. +1-713-784-0000
Fax: + 1-713-784-0001
www.Kam.com
KAM OID
MADE IN USA
RS232 RXD
CHS GND
RS232 TXD
GND
24/12 VDC (+)
24/12 VDC (-)
485 RX
CHS GND
485 TX
CHS GND
4-20 mA (+)
4-20 mA (-)
CAUTION: OID provides the power
for the 4-20 mA load.
Do NOT apply external voltage, as
this will damage the 4-20 mA output.
500 Ohm
max load
KAM serial cable
(diagnostics only)
12 or 24 VDC / 1 amp
power supply
FIG. 3-15
POWER
OUTPUTS
COMMUNICATION INTERFACE
V (+)
GND
RS232 (diagnostics)
RS485 (Modbus RTU)
CAUTION: When electronics enclosure is open, be ex-
tremely careful to avoid any contact with interior fiber
optic connections. Failure to do so could result in the OID
malfunctioning.
4-20 mA (–)
Current output, source powered
4-20 mA (+)
To grounding rod (preferred)
or enclosure
I N S TA L L AT I O N C O N T I N U E D
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