3-4
IM 253710-01E
3.3
Installing the Input Module
WARNING
• To prevent shock and damage to the instrument when installing or removing
input modules, turn OFF the power supply of the circuit under measurement,
turn OFF the power switch of the instrument, and remove all measurement
cables from all input modules.
• To prevent shock, degradation of the measurement accuracy due to internal
heating, and electromagnetic interference, attach cover plates on the slots that
do not have input modules installed.
• If the input module comes out of the slot while the instrument is in use, it can
cause electric shock or damage the instrument and input module. Tighten the
screws (four locations, top and bottom) that came with the input module to
secure the module in place.
• Do not put your hand inside the slot, because there are protrusions along the
module guide that may injure your fingers.
Types of Input Modules
The following types of input modules are available.
MODEL
Name (Abbreviation)
Notes
253751
Power measurement module
Voltage 1000 V / current 5 A / current sensor 500 mV
253752
Power measurement module
Voltage 1000 V / current 5 A & 20 A / current sensor
500 mV
253771
Sensor input module
Motor module, 2 channel input.
Input signals from revolution sensor or torque meter.
Precautions when Installing or Removing Input Modules
• Install the power measurement modules in numerical order starting from the slot of
element 1. If you skip elements that have a smaller number, measurements that use
one of the available wiring methods may not be made properly (see section 5.2,
“Selecting the Wiring Method”). (For example, do not install a power measurement
module in element 2 and leave element 1 empty. Do not install power measurement
modules in elements 1 and 3 and leave element 2 empty.)
• Install the sensor input module into the element number 4 slot. It will not operate
properly if it is installed into another slot. When the sensor input module is installed,
only three power measurement modules can be installed.
• If you replace an input module, the setup parameters of that element are initialized
when the power is turned ON. To keep the previous settings, the setup parameters
must be saved. For information on saving the setup parameters, see 12.5 “Saving
and Loading Setup Parameters.”