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8 Startup and parameterization
Configuring the digital input DI1 to trigger calibration for the device's HOLD mode
NOTE!
Triggering of HOLD mode is ignored if the checking function for proper output response is active (
see
chapter 8.7.3 "Checking proper response of the outputs", page 70).
The HOLD mode is used to carry out maintenance work without interrupting the process.
In practice, when the device is in HOLD mode:
•
The device status LED flashes.
•
The current transmitted at the 4 to 20 mA output is frozen to the value of the last measured
flow rate.
•
The displayed flow rate is frozen to the value of the last measured flow rate.
•
Each relay or transistor output is frozen to the status it had when Hold mode was activated.
•
The counters do not increment any more (frozen).
•
The device remains in Hold mode until the digital input switches again.
INPUT
DI1
HOLD
INV YES
INV NO
1. Choose INV NO to trigger the in-
put on the leading edge.
2. Choose INV YES to trigger the in-
put in the trailing edge.
3. Confirm
RETURN
