iRIS 350FX Reference Manual V1.50
10
HyQuest Solutions (NZ) Ltd
- PO Box 9466, Hamilton, New Zealand Tel: +64 7 857-0810 Email: [email protected]
Figure 2 - I/O Connector
Internal Battery
The iRIS is supplied with an internal rechargeable 12V 0.8A/Hr sealed lead-acid battery. Upon installation,
you will need to connect this battery as it is shipped disconnected to preserve battery life. It should also be
disconnected if the unit is not going to be used for some time.
For maximum flexibility, the iRIS I/O connector has two terminals provided for additional 12V power supply
flexibility. These terminals (marked 12V+ and GND) can either be used to deliver 12V from the internal battery
out to power an external sensor or other small load, or alternatively be connected to an external 12V battery
(for greater battery capacity) or a 12Vdc battery charger type power supply. See the next two sections on
using the 12V terminals and the external (charger) power supply feature.
TOP
OW
1-Wire Expansion Port (PCB Rev 1.2 +)
GND
Digital Common Ground (PCB Rev 1.2 +)
AIN4
Analogue Input #4
AIN3
Analogue Input #3
AIN2
Analogue Input #2
AIN1
Analogue Input #1
Wire
AGND Analogue Common Ground
Entry
AOUT Variable Analogue Output ((0-5V or 4-20mA)
Side
DIO4
Digital Input/Output #4
DIO3
Digital Input/Output #3
DIO2
Digital Input/Output #2
DIO1
Digital Input/Output #1
SDI
SDI-12 Data Bus
DGND Digital Common Ground
12V+ 12Vdc Internal/External Battery
GND (-) 0Vdc Internal/External Battery Supply -
VIN+
15-30Vdc External Power Supply (Charger Input) +
GND (-) 0Vdc External Power Supply (Charger Input) -
BOTTOM
WARNING!
INTERNAL BATTERY
The 12V+ and GND terminals of the I/O connector are effectively connected directly in parallel with the
internal 12V battery. A resettable semiconductor fuse is fitted for short-circuit protection.
However, only connect 12V lead-acid batteries or a regulated d.c power supply that is designed for
charging a 12V lead-acid battery, to these terminals.
Applying a voltage higher than 14.5V for a sustained period to these terminals will permanently
damage the internal battery and may cause an acid leak and/or an explosion.
Summary of Contents for iRIS 350FX
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