Yokogawa Button Operated MV2000 - Manual (Page 78)

2-18
IM MV1000-01E
Rechargeable Battery Model (f the power supply suffx code s -3)
Recycle Mark
The Ni-MH battery that is used by the MV1000 is recyclable.
The following recycle mark is used on the battery and in this user’s manual to indicate
that it is recyclable.
Indcaton of rechargng
When the battery needs recharging after it is used over a given period, the ALARM
LED (red) turns ON. The operation time from the point when the ALARM LED turns ON
until the battery becomes empty is normally 10 minutes to 15 minutes. However, this
varies depending on how it is used. If the battery was not fully charged, the battery may
become empty in less than 5 minutes. Therefore, charge the battery immediately when
the ALARM LED turns ON.
ALARM CHARGE
ALARM LED CHARGE LED
When an external storage medium is in operation, the ALARM LED may turn ON due to
the changes in the load of the battery voltage.
If the ALARM LED turns ON while data is being saved, you can continue the save
operation until the battery is empty.
The MV1000 has a built-in over-discharge protection circuit. To prevent the battery from
over discharge, a shutdown operation is performed to cut off the current from the battery
after a short time after the ALARM LED turns ON.
Thus, the power to the MV1000 is automatically turned OFF after the ALARM LED turns
ON. If you leave the MV1000 in this condition for an extended time, the battery may over
discharge due to the minute consumption of power by the internal circuit operation. If the
MV1000 automatically turns OFF after the ALARM LED turns ON, make sure to turn the
power switch of the MV1000 to the OFF position.
Charging of the battery starts when the AC adapter is connected to the MV1000. In this
case, the CHARGE LED and the ALARM LED may blink simultaneously, but the ALARM
LED will turn OFF after charging the battery for awhile. When fully charged, the CHARGE
LED blinks.
Additionally, while the battery is installed, the battery power is consumed through minute
current even if the power switch of the MV1000 is turned OFF. If you are not using the
MV1000 for an extended time, remove and store the battery.
Note
With Ni-MH batteries, a phenomenon called memory effect occurs in which the apparent
battery capacity decreases when shallow charge and discharge cycles are repeated followed
by a deep discharge. In such case, the capacity recovers by repeating the cycle of operating
the MV100 until shutdown (discharge the battery until the end-ofdischarge
voltage) and recharging several times.
The battery is charged by leaving the AC adapter connected, whether the power switch
is ON or OFF. The battery voltage is different during AC adapter operation and battery
operation. The ALARM LED does not turn ON during AC adapter operation even when
recharging is necessary. Note the following points.
2.4 Connectng the Power Supply