Connecting External I/O Terminal - Hioki 3154 Instruction Manual

52
_____________________________________________________________________

6.1.3 Connecting External I/O Terminal

In order to avoid risk of damaging the unit, do not input
CAUTION
excessive voltage or current above standard to external I/O
terminal. See "6.1.2 Electric Specifications" to set standard
voltage and current.
5 VDC is output between internal DC power
supply(INT.DCV) and INT.GND. Maximum current is 100
mA. To prevent product damage, do not connect to
external circuit consuming more than 100 mA.
Power supply voltage to external DC power supply
(EXT.DCV, EXT.COM terminals) is 5 to 30 VDC.
To prevent product damage, do not apply voltage over 30
VDC. In order to activate circuit, connect power supply
with at least 50 mA output capacity.
In order to avoid risk of electric shock, turn equipment
power supply OFF before connecting and disconnecting
wires to terminal board. Carefully handle wiring and see
that no wire is disconnected and exposing conducting
elements including the unit body etc.
To prevent product and equipment damage, when using
relay, be sure to install back electromotive force absorption
diode.
Do not short circuit terminals other than designated
terminals. Internal short circuit may occur when sheathing
is exposed beyond standard length.
______________________________________________________________
External Interface