
Masoneilan SVI II AP Digital Positioner Quick Start Guide
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Without a load, when the switch is on (closed) the external voltage would be dropped across the
switch. This damages the switch (Figure 31).
Figure 31
Simplified Switch Installation Drawing:
Configuration Not Allowed
Checking Switch Operation
ValVue Commands
This procedure gives an example, using the settings in Figure 32, to see if a switch is operating:
1. Click the
Configure
tab, click and Figure 32 appears.
Figure 32
I/O Configure
2. Switch from
Normally Opened
to
Normally Closed
or vice versa, click
OK
and
Apply
Changes
.
3. Click the
Monitor
tab.
4. Select
Command 142 Read Switches
from the pulldown list and click
Send Cmd
.
The information field below populates with the configured switch states.
Ensure that the switch just reconfigured has changed state.
SVI II AP
Switch
Output
External
Voltage
Source
NOT ALLOWED
Full voltage
drop is occur-
ring across the
switch (no cur-
rent limit in
place)