Power Supply; Mains Operation; External Dc Voltage Supply; Operation With Rechargeable Battery (Only With Module Es5690-Ap) - Ahlborn ALMEMO 5690-2M Operating Instructions Manual

7. Power supply

7. POWER SUPPLY
Power can be supplied to the instrument in any of the following ways :
Mains adapter 12V, 2.5A
Electr. isol. power supply cable, 10 to 30 VDC, 0.25 A
Electr. isol. power supply cable, 10 to 30 VDC, 1.25 A
Rechargeable battery module, NiMH 9.6 V / 1600 mAh
See product overview, Annex 14 and the following chapters.

7.1 Mains operation

To power the device from the mains use the mains adapter provided, 12 V /
2.5A (ZB1212-NA9). The mains adapter must be connected to the DC socket
(6g) and locked by twisting to the right.
If necessary the device can also be grounded via the bare socket (6h) (e.g. pro-
tective ground connector).

7.2 External DC voltage supply

The DC socket (6g) can also be used to connect another DC voltage, 10 to 13
V (minimum 200 mA). For this connection use a cable with 2 banana plugs (ZB
5090-EK). If, however, the power supply has to be electrically isolated from the
transducers or if a larger input voltage range, 10 to 30 V, is required, then elec-
trically isolated supply cable (ZB 3090-UK) must be used (or ZB 3090-UK2 with
the rechargeable battery module). It will then be possible to use the measuring
instrument in a 12-volt or 24-volt on-board supply system.
7.3 Operation with rechargeable battery
(only with module ES5690-AP)
For mains-independent operation the system must be equipped with module AP
with eight NiMH rechargeable batteries (9.6 V / 1600 mAh). At a current con-
sumption of approx. 40 mA this will give an operating time of approx. 40 hours.
To prolong the operating time for the purposes of long-term recording the de-
vice can be left in SLEEP mode; (see 12.2.5). The operating voltage can be
checked in the power supply menu (see 12.7); this gives you a basis for esti-
mating the remaining operating time. When the remaining battery capacity
drops to approx. 10%, the
flashing; as soon as this happens the batteries must be recharged. If the batter-
ies are completely discharged the device will switch off to avoid the risk of criti-
cally low discharge. The measured data and time-of-day will, however, be re-
tained; see 7.6. The NiMH rechargeable batteries can in fact be recharged at
any time and in any charge status using the intelligent charge circuitry. To
charge the batteries the mains adapter,12V, 2.5A (ZB1212-NA9) must be con-
nected to socket DC-A (5a) on the battery module. The "CHARGE" lamp should
then light up indicating that the batteries are being recharged. After approx. 3.5
18 ALMEMO
´´µµµµµµµµµ¶
symbol in the status bar of the display will start
® 5690-2M
ZB1212-NA9
(ZB3090-UK)
(ZB3090-UK2)
(ES5690-AP)