4 How to Use
4-3. Precautions for system designing
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RP-D58 Series
Keep the pump unit (and its cables) away from noise source devices.
When selecting installation points, avoid a place where high-frequency/high-voltage devices exist.
Do not install the pump unit in a place where maintenance of the detector head cannot be performed or
where handling the pump unit involves dangers.
Regular maintenance of the pump unit must be performed.
Do not install the pump unit in a place where the machinery must be stopped when maintenance is
performed in its inside, where parts of the machinery must be removed to perform maintenance, or where
the pump unit cannot be removed because tubes or racks prevent access to it. Do not install the pump unit
in a place where maintenance involves dangers, for example, near a high-voltage cable.
Do not install the pump unit in machinery which is not properly grounded.
Before installing the pump unit in machinery, the machinery must be grounded properly.
Do not install the pump unit in a place where other gases exist around it.
The pump unit must not be installed in a place where other gases exist around it.
4-3. Precautions for system designing
Using a stable power supply
The external output and alarm contact of the pump unit may be activated when the power is turned on,
when momentary blackout occurs, or while the system is being stabilized. In such cases, use a UPS
(uninterrupted power supply), or take appropriate actions on the receiving side of output signals.
The pump unit must be provided with the following power supply.
Power supply voltage
RP-D58·AC: 100 - 110 VAC ±10%, 50/60Hz: Terminal voltage of the pump unit
RP-D58·DC: 24 VDC
10%
: Terminal voltage of the pump unit
Allowed time of
momentary blackout
RP-D58·AC:
Less than approx. 200 msec
(To recover from the momentary
blackout for 200 milliseconds or more,
restart the pump unit.)
RP-D58·DC:
Less than approx. 10 msec
(To recover from the momentary
blackout for 10 milliseconds or more,
restart the pump unit.)
Example of actions
To ensure continuous operation and
activation, install an UPS outside the
pump unit.
Others
Do not use it with a power supply of
large power load or high-frequency
noise.
Example of actions
Use a line filter to avoid the noise
source if necessary.
CAUTION
An unstable power supply and noise may cause malfunctions or false alarms.
The descriptions in this section must be reflected on the designing of a system using the pump unit.
