Omega cl310 User Manual page 22

Parameters include:
1. Which auto function will be available (Step or Ramp).
2. The Auto Function Time, time between steps for step and time to
get from over one limit to the next for ramp.
The limits for the ramp and step functions are set to the 0% and
100% values. See Section 4.1 Setting 0% and 100% Output
Parameters. Steps are in 25% increments from the 0% value to the
100% value.
4.3 Sourcing mA
To source a current, follow these steps:
1. From the Main Menu select lower display [LOWER]. Choose
[mA] from the primary parameters.
2. Switch to input/output control, and select output [OUT].
3. Connect the leads to the mA terminals, as shown in Figure 10.
4. Enter the desired current using the keypad.
Figure 10. Connections for Sourcing Current
4.3-1 HART™ Resistor Selection
The CL310 can be set-up so that the 250 ohm resistor required for
HART™ configuration devices resides inside the CL310. Enabling
the CL310's internal 250 ohm resistor eliminates the need to
manually add a series resistor during a HART™ calibration process.
NOTE: When the CL310's internal 250 resistor is enabled, maximum
load driving capability drops from 1000 ohms @ 20mA to 750 ohms
@20mA.
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