Campbell CR6 Series, Operator'S Manual

Page: 128 / 690

Section 6. Specifications
128
CR6 Power Out Limits: 12V and SW12
Terminal
Source Limit
1
SW12-1 or SW12-2
1660 mA @ –40 °C
1290 mA @ 0 °C
1100 mA @ 20 °C
830 mA @ 50 °C
640 mA @ 70 °C
500 mA @ 85 °C
12V + SW12-1 + SW12-2
3880 mA @ –40 °C
2980 mA @ 0 °C
1800 mA @ 20 °C
1350 mA @ 70 °C
1000 mA @ 85 °C
1
Thermal fuse hold current. Overload causes voltage drop. Disconnect and let
cool to reset. Operate at limit if the application can tolerate some fluctuation.
CR6 Power Out Limits: Total System
Temperature
(°C)
Current Limit at 12 Vdc
1
(Amperes)
–40° 3.80
20° 2.50
70° 1.35
85° 1.00
1
Limited by self-resetting thermal fuse
6.8 Ground Terminals — Specifications
Signal Ground:
Six common terminals ( ) for
grounds associated with sensor
signals
Power Ground: Four common terminals ( G ) for
grounds associated with power and
control connections
Resistive Ground: One terminal ( RG ) for decoupling
ground on RS-485 signals; 100 ohm,
2 watt resistor to ground
Ground Lug: Heavy gage connection to earth
ground ( ); field earth ground
should be minimum five-foot
copper-sheathed ground rod
connected with minimum 14 AWG
wire