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3. OPERATION AND FUNCTION
This Chapter describes operation and various functions of the WGI-400A.
3-1 SETTING LOCK STATE
The setting [LOCK] function is used to prohibit the change in set values in order to prevent erroneous operation.
In the [LOCK] state, changing functions or high/low limit values are not allowed. However, the preset high/low
limit values can be monitored (for checking).
Before changing functions or high/low limit values, do not forget to cancel the [LOCK] state.
• Power ON and the WGI-400A starts up in measuring state with [LOCK] LED turned ON/ OFF depending on
the state before turning OFF the power.
• After changing the desired settings, press the [LOCK] button to be in [LOCK] state to prevent erroneous
operation.
How to set and cancel the [LOCK] state are described in the following.
Press the HOLD + FUNCTION keys for 2 seconds at the same time.
When the [LOCK] state is ON: Cancels the [LOCK] state ([LOCK] LED lights out)
When the [LOCK] state is OFF: Sets the [LOCK] state ([LOCK] LED lights up.)
Reference: However, even if it is in the [LOCK] state, the external control input terminal (INPUT) operates.
3-2 SELECTING BRIDGE EXCITATION VOLTAGE
Bridge excitation voltage (Excitation voltage) applied to transducers can be selected from either 2 V or 4 V.
Select the higher voltage within the recommended excitation voltage range of transducers. Factory default
setting is 2 V.
1) Changing to BV select mode.
Press the FUNCTION key for more than 2 seconds. ‘F-01’ is displayed to be in function selecting mode.
Press the → key until ‘F-13’ appears and then, press the SET key.
Bridge excitation voltage selecting function is set.
2) Selecting BV Voltage
The current selected BV No. appears and flickers.
Press the ↑ key to change the setting (0: BV 2 V, 1: BV 4 V).
And then, press the SET key.
3) End
Function ‘F-13’ is displayed. Press the CANCEL key. Then, the registered bridge excitation voltage is
applied to the transducer.
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