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IM 701240-01E
3.14 Connecting Sensors to the Frequency Module
Sensors and Signal Output Sources That Can Be Connected
The table below shows the sensor and signal output source that can be connected.
Appropriate input presets are provided for each sensor and signal output source. For the
procedure of presets, see section 5.17.
Sensor and Signal Output Source
Preset Name
5-V logic signal, 5-V output sensor, and sensor with TTL output
Logic 5V
3-V logic signal and 3-V output sensor
Logic 3V
12-V driven relay/sequence circuit and 12-V driven sensor
Logic 12V
24-V driven relay/sequence circuit and 24-V driven sensor
Logic 24V
Sensor/Encoder that outputs positive and negative voltages and
ZeroCross
sensor that outputs sine waves
100-VAC power supply (connected via the 700929 isolated probe)
AC100V
200-VAC power supply (connected via the 700929 isolated probe)
AC200V
Power-generating electromagnetic pickup
EM Pickup
Open collector output (0 to 5 V output) and contact output
Pull-up 5V*
*
For the internal equivalent circuit for “Pull-up 5V,” see page 5-40.
WARNING
Over-Range Indication
If over-range is indicated, the SL1400 may be receiving a voltage higher than
the observed waveform or measured waveform values. To prevent electric
shock, change the vertical scale with the RANGE knob so that the entire
amplitude of the waveform is displayed within the waveform display area, and
check the input voltage level.
Over-range indication
Indicates the number of the channel that over-range is occurring on.
If over-range is occurring on multiple channels, the smallest channel
number among them is indicated.
Precautions to Be Taken When Connecting to Sensors or Signal Output Sources
CAUTION
• The maximum input voltage for direct input is indicated below. Applying a
voltage exceeding this value can damage the input section. If you are applying
high voltage that exceeds 42 V, be sure to use the isolated probe (700929).
Maximum input voltage: 42 V (DC+ACpeak) (CAT II)
• The minimum input voltage is 0.2 V
P-P
. At voltage amplitude less than 0.2 V
P-P
,
the measured values may be unstable.
• Attach/Remove the sensors after confirming that the rotating object to be
measured is stopped.
• Set the preset to electromagnetic pickup (EM Pickup) only when using the
electromagnetic pickup.