L-770HP--E
6.4 Power Supply Lines and Ground Terminal
（
）
Please connect the power supply wiring to the L and N terminals (+and – terminals for DC
specification) of the power connection terminal.
（
）
For the explosion-proof specification, please connect to the Type A grounding from the ground terminal.
For the non-explosion-proof specification, please connect to the Type D grounding from the ground
terminal.
6.5 Wiring Instructions for Input/Output Signal
・Output signal terminal (Modbus communication type)
Each input / output is insulated.
Specifications
Polarity
Description
AC power
specification
L
AC 00V to 0V, 0/0Hz (Allowable voltage range: AC V to V)
Max VA, 7W
N
DC power
specification
+
DC 0V to 0V (Recommended power supply capacity for DC
specification: VDC, A or over)
Max 7W
－
[Power connection terminal]
Specifications
Description
Explosion-proof
Type A grounding
Non-explosion-proof Type D grounding (protective ground terminal)
[Grounding terminal]
No.
Name of
terminal
Polarity
Description
ANALOG
－
Analog to 0mA, output , maximum load resistance 00
Ω
,
HART communication
+
ANALOG
－
Analog to 0mA, output , maximum load resistance 00
Ω
+
PULSE
－
Open drain pulse (equivalent to open collector pulse) Max 0VDC, 0mA or
voltage pulse (L: .V or less, H: V or more, output imp.k
Ω
)
+
7
STATUS
I/O
－
Status input or status output (switched by parameter)
Input: contact input ON, width 00ms or more, ON 00
Ω
or less, OFF
00k
Ω
or more
Output: open drain pulse (equivalent to open collector pulse) MAX 0VDC,
0mA
+
[Input / output signal terminal (standard type)]
No.
Name of
terminal
Polarity
Description
HART
－
HART communication is used for maintenance.
+
RS-
－
Modbus (RS-) communication terminal
+
PULSE
－
Open drain pulse (equivalent to the open collector pulse) Max 0VDC, 0mA; or
Voltage pulse (L: .V or less, H: V or over, output impedance: .k
Ω
)
+
7
STATUS
I/O
－
Status input or Status output (switching by the parameter)
Input: contact input ON width: 00ms or over, ON: 00
Ω
or less,
OFF: 00k
Ω
or over
Output: Open drain pulse (equivalent to open collector pulse)
Max 0VDC, 0mA
+
CAUTION: The supply voltage shall be within the range designated on the product
nameplate which is affixed to the housing.
