Hioki LR8450 - Configuring Alarm Output (ALARM); Configuring Alarm Output (ALARM

8.2 Conguring Alarm Output (ALARM)
This section describes how to set the voltage level for the signal that is output when an alarm
condition is satised.
For more information about alarms, see “4 Alarm (Alarm Output)” (p. 171).
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Under [Alarm output 1] to [Alarm output 8], select the voltage level you wish to output when
outputting an alarm.
Low

Outputs the alarm at low level (0 V to 0.5 V).
High Outputs the alarm at high level (4.0 V to 5.0 V).
Alarm output terminal specications
Output type Open-drain output (with 5 V voltage output)
Output voltage High level: 4.0 to 5.0 V; low level: 0 to 0.5 V
Switchable between high and low level output
Output
response time
When using the plug-in modules:
(Recording interval or data refresh interval, whichever is longer) × 2 + 1 ms
+ (analog response time)*
When using the wireless modules (LR8450-01 only):
(Recording interval or data refresh interval, whichever is longer) × 2
+ (wireless response time)*
2
+ (analog response time)*
1
*1: Varies with lter setting (U8554: 5 ms, with 120 Hz low-pass lter)
*2:
Depending on the number of connected modules (3 s when one wireless module is
connected).
Maximum
switching
capacity
5 V to 30 V DC, 200 mA
Output pulse
width
10 ms or greater
External Control (EXT. I/O)
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