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Specifications
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機
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Connecting the Unit
Alarm Outputs
8993
DIGITAL I/O UNIT
Instruction Manual
Printed in Japan
Introduction
Thank you for purchasing the Hioki 8993 DIGITAL I/O UNIT. To
obtain maximum performance from the instrument, please read this
manual first, and keep it handy for future reference.
The 8993 DIGITAL I/O UNIT is an optional unit for use with the
Hioki MEMORY HiLOGGERs. Make sure you connect it to the
MEMORY HiLOGGER before use.
Input Specifications
Input channels 16 channels
Maximum input
voltage
Detection levels High = 2.5 V or more, Low = 0 to 1.5 V
Input resistance 1.1 MΩ5%
Transfer rate Once per recording interval
(Each input channel and the HiLogger chassis share
common ground)
50 VDC
Output Specifications
Input type No-voltage contact (normally open), open collector
Output channels 16 channels
Maximum rated
voltage to ground
(output only)
Withstand voltage 350 VAC for 1 minute
Output circuit Open collector output (active low)
Maximum switching
capacity
Output updating Once each recording interval
or voltage input
Outputs can be set to correspond to any of the 32
analog input channels, 4 pulse input channels, or
one 16-bit digital channel. (Each output channel is
isolated from the others and from the HiLogger
chassis ground.)
30 Vrms AC, 60 VDC
(between each output channel and the HiLogger,
and between each output channel)
(between each output channel and the HiLogger,
and between each output channel)
5 to 60 VDC, 10 mA
Before connecting or disconnecting the unit, make sure the power switch is
off. When the unit is not connected, be sure the cover is installed.
1. Using a plastic-handled screwdriver, remove
the two screws that secure the unit's rear
cover, and lift it off.
2. Insert the 8993 DIGITAL I/O UNIT.
3. Secure with the two screws provided.
If the connector does not mate easily, rock the
Digital I/O unit slightly as shown while pressing
the units together.
The alarm outputs are on the upper half of the
terminal block. Sixteen alarm output (active-low)
channels are provided.
Loosen the screw on the terminal block using the
screwdriver supplied with the instrument.
Insert the wires in each + and - terminal, and
tighten the screws.
For descriptions of the alarm output settings, refer
to the Memory HiLogger Instruction Manual.
Battery Pack Installation
Another Hioki 9447 BATTERY PACK can be
installed in the Digital I/O unit to supplement the
battery pack in the instrument, approximately
doubling the operating time.
For details of battery pack installation, refer to the
Memory HiLogger Instruction Manual.
Initial Inspection
When you receive the instrument, inspect it carefully to ensure that no
damage occurred during shipping. If damage is evident, or if it fails to operate
according to the specifications, contact your dealer or Hioki representative.
Maintenance and Service
To clean the instrument, wipe it gently with a soft cloth moistened with
water or mild detergent. Never use solvents such as benzene, alcohol,
acetone, ether, ketones, thinner or gasoline, as they can deform and
discolor the case.
If the product seems to be malfunctioning, Contact your dealer or Hioki
representative. When transporting the product, use the original packing
materials in which it was shipped, and pack in a double carton. Damage
occurring during transportation is not covered by warranty.
Safety
Follow these precautions to ensure safe operation and to obtain the full
benefits of the various functions.
DANGER
This device is designed to conform to IEC 61010 Safety Standards, and
has been thoroughly tested for safety prior to shipment. However,
mishandling during use could result in injury or death, as well as damage
to the instrument. Be certain that you understand the instructions and
precautions in the manual before use. We disclaim any responsibility for
accidents or injuries not resulting directly from product defects.
The following symbols in this manual indicate the relative importance of
cautions and warnings.
DANGER
WARNING
Be sure to read the Danger, Warning, Caution and Notes information in the
instruction manual supplied with the Memory HiLogger, and always follow the
included precautions.
For the measurement category, refer to the instruction manual of the Memory
HiLogger.
Indicates that incorrect operation presents an extreme hazard
that could result in serious injury or death to the user.
Indicates that incorrect operation presents a significant
hazard that could result in serious injury or death to the user.
General Specification
Compatible models HIOKI Memory HiLoggers
Operating
environment
Operating
temperature and
humidity
Storage temperature
and humidity
Size (without
protrusions)
Weight Approx. 0.3 kg (1.1 oz.) (without battery)
Accessories Instruction Manual
Options 9447 BATTERY PACK
Standards applying Determined by specification of the connected
Indoors, <2000 m (6562 feet) ASL
0to40 (32 to 104 )at30to80%RH
(non-condensating)
-10 to 50 (14 to 122 )at30to80%RH
(non-condensating)
Approx. 92W 170H 52D mm
(3.62"W
Approx. 0.55 kg (1.9 oz.) (within battery)
The HiLogger can be powered by installing a
supplemental Model 9447 BATTERY PACK (which
must be charged in the HiLogger or Hioki 9643
CHARGE STAND).
Memory HiLogger
6.69"H 2.05"D)
Logic Inputs
WARNING
The logic inputs share common ground with the instrument. Therefore,
electric shock or damage to the instrument could result if the source of
power supplied to the instrument by the AC adapter is not the same as that
supplied to the measurement object. Even if power is supplied from the
same source, potential difference can result from wiring conditions,
resulting in unintended current flow through the measurement lead and
measurement object which could damage the instrument.
To avoid such hazards, use only power cords with two power
conductors plus a ground conductor for both the measurement object
and the instrument, and connect both cords to the same mains outlet
before connecting the leads to the measurement object.
Measurement
Ob
ect
Power Outlets
The logic inputs are on the lower half of the
terminal block. Sixteen logic input channels are
provided.
Loosen the screw on the terminal block using the
screwdriver supplied with the main unit.
Insert the wires in each + and - terminal, and
tighten the screws.
For descriptions of the logic input settings, refer to
the Memory HiLogger Instruction Manual.
C Adapter
Main Unit
Power
Ground
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