ITech IT-M7700 Series User Manual

Operation and Application
Table 4–7 Description of DB25 Analog Interface
Pin Name Type Description
1 OCPrms
Program
Analog in Programs OCPrms.
2/7/12/
13/17/
25
Not used - -
3/4/5/6 AGND Ground Ground for analog inputs and
outputs.
8 On/Off input Digital in Receives the signal that is used to
turn the output on or off.
9 Power output Digital out Sends the signal that is used to in-
dicate whether the output status is
normal or not.
10 AC mode
output
Digital out AC output status indicator. High
when in AC mode.
11 Error output Digital out Sends the signal that is used to in-
dicate whether the power supply er-
rors or not.
13/25 RS485–B
/RS485–A
Communica-
tion interfaces
RS–485 communication interfaces.
14 Irms/Idc
Monitor
Analog out Current monitor signal.
15 Vac/Vdc
Program
Analog in Programs output voltage.
16 Vrms/Vdc
Monitor
Analog out Voltage monitor signal.
18 Vref+ Analog out The +10Vdc/10mA reference volt-
age output by the power supply can
be connected to a resistance subdi-
vision for analog control.
19 Vref- Analog out The -10Vdc/10mA reference volt-
age output by the power supply can
be connected to a resistance subdi-
vision for analog control.
20 Error Clear Digital in Signal input for clearing the instru-
ment error.
Copyright © Itech Electronic Co., Ltd.
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ITech IT-M7700 Series Specifications

General

Brand	ITech
Model	IT-M7700 Series
Category	Portable Generator
Language	English