Table of Contents
Advertisement
10.4 Comparator Function (optional)
Contact Relay Output
CAUTION
Comparator Mode
When the current value is less than 3A: NO-GO will be determined and the
circuit becomes open.
When the current value is 3A or more: GO will be determined and the circuit
becomes closed.
Current
3A
Current
3A
IM 253401-01E
When the instrument is equipped with option /CMP you can compare the measured/computed/
integrated/analysis values with previously set limits and these results can be output by contact
relay.
This instrument is equipped with four contact relays (4 ch) as follows. If the relay is not
operating, the NC (Normally Closed) contact is closed. If the relay is operating, the NC contact
is opened and the NO (Normally Open) contact is closed.
Relay specifications
• Contact rating
• Minimum load
• Operating life with load
• Operating life without load : approx. one hundred million times
• Contact Response time
Note
Since this relay is subject to wear, it is excluded from the 3-year warranty.
Damage to the relays may occur when a voltage or current exceeding the
specified range is applied to the contact output terminal.
The following two comparator modes are available.
Single Mode
If the measured/computed/integrated/analysis values exceed the previously set limits, the relay
contact will become NO. This mode is useful when you want to assign each of the four relays
individually. Refer to the figure below.
Limit of ch2 is set to 3A
NO-GO determination area
Time
GO determination area
Limit of ch2 is set to 3A
Time
: rated 24V/0.5A (max. 30V/0.5A)
: 10mV/10µA
: approx. 500000 times (at contact rating)
: less than 500ms
Below limit
⇒ open status
24V
Exceeding limit
⇒ closed status
24V
10
NC
ch 2
COM
NO
NC
ch 2
COM
NO
10-7
Advertisement
Table of Contents
