Hitachi L700 Series

Chapter 4 Explanation of Functions
4 - 63
Data Description Reference item Page
53 MJA: Major failure Major failure signal 4-73
54 WCO
Window comparators function 4-74 55 WCOI
56 WCO
4.2.59 Intelligent output terminal a/b (NO/NC) selection
The intelligent output terminal a/b (NO/NC) selection function
allows you to specify a-contact or b-contact output for each of
the intelligent output terminals [11] to [15] and the alarm relay
terminal.
The intelligent output terminals [11] to [15] are used for open-collector output, and the alarm relay terminal
is used for relay output.
Item Function code Data Description
Terminal active state C031 to C035
00
a-contact (NO)
01
b-contact (NC)
Alarm relay active state C036
00
a-contact (NO)
01
b-contact (NC)
- An a-contact turns on the output signal when closed and turns it off when opened.
- A b-contact turns on the output signal when opened and turns it off when closed.
(1) Specifications of intelligent output terminals [11] to [15]
Intelligent output terminals [11] to [15] have the following specifications:
15 CM2 … … 11
Setting of C031 to C035 Power supply Output signal
00
(a-contact)
ON
ON
OFF
OFF －
01
(b-contact)
ON
ON
OFF
OFF －
(2) Specifications of alarm relay terminal
The alarm relay terminal uses a normally-closed (NC) contact that operates as described below.
AL0 AL1 AL2
Example of operation as an alarm output terminal
Setting
of C036
Power
supply
Inverter
status
Output terminal state
AL1-AL0 AL2-AL0
00
ON
Error Closed Open
Normal Open Closed
OFF － Open Closed
01
(default)
ON
Error Open Closed
Normal Closed Open
OFF － Open Closed
C031 to C035: Terminal [11] to [15] active state
C036: Alarm relay active state
Related code
Electric characteristics
(Between each terminal and CM2)
Voltage drop when turned on: 4 V or less
Allowable maximum voltage: 27 VDC
Allowable maximum current: 50 mA
Inside the
inverter
Inside the
inverter
Resistance load Inductive load
AL1-AL0
Maximum contact
capacity
250 VAC, 2 A
30 VDC, 3 A
250 VAC, 2 A
30 VDC, 8 A
Minimum contact
capacity
100 V AC, 10 mA
5 VDC, 100 mA
AL2-AL0
Maximum contact
capacity
250 VAC, 1A
30 VDC, 1A
250 VAC, 0.2 A
30 VDC, 0.2 A
Minimum contact
capacity
100 VAC, 10 mA
5 VDC, 100 mA