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All Rights Reserved. Copyright © 2000, Yokogawa Electric Corporation
TI 04L01A01-02E
4.3
Contact Input/Output
4.3.1
Remote Control Function (/R1)
As an option, external contacts can be used to control the function of the recorder.
Controlled items
: The following items can be controlled using contact input (up to eight points)
1. Start/stop memory (level)
2. Event file external trigger input (Trigger, 250 ms or more)
3. Set the time (Set the time precisely on the hour using contact point, trigger,
250 ms or more)
4. Start/stop computation (level)
5. Computed data reset (trigger, 250 ms or more)
6. Manual sampling (trigger, 250 ms or more)
7. Message entry (Up to eight points, trigger, 250 ms or more)
8. Load setup (Up to three points, trigger, 250 ms or more)
9. Alarm ACK (trigger, 250 ms or more)
Input signal
: Dry contact, open collector (TTL or transistor)
Input condition
: ON voltage
: 0.5 V or less (30 mADC)
Leak current when OFF : 0.25 mA or less
Signal width
: 250 ms or more
Input format
: Photocoupler isolation (one side common)
Built-in isolation power supply
Withstand voltage
: Between input terminal and ground terminal: 500 Vdc for one minute
4.3.2
Alarm Output Relay (/A1,/A2,/A3,/A4,/A5)
As an option, the alarm condition can be output to external devices.
Number of output points : DX100: Select from 2 (/A1), 4(/A2), 6(/A3) points
DX200: Select from 2(/A1), 4(/A2), 6(/A3), 12(/A4), and 24(/A5) points
Output format
: NO-C-NC
(energizing/de-energizing, AND/OR, hold/non-hold can be switched)
Contact capacity
: 250 VDC/0.1 A (resistive load), 250 VAC (50/60 Hz)/3 A
4.3.3
FAIL/Memory End Output (/F1)
FAIL output indicates a system error by activating a relay from the back panel.
Memory end output activates a relay output from the back panel immediately before the display data file is
overwritten.
When the file combination is set to event data only and the trigger is set to free, the relay output is
activated immediately before writing to the event file.
Specified time before overwriting : Select from 1, 2, 5, 10, 20, 50, 100 hours.
Remaining external medium
: Outputs a signal when the remaining capacity on the external medium
falls to 10% (auto mode).
Output format
: FAIL relay
; NO-C-NC (de-energizing)
Memory end relay
; NO-C-NC (energizing)
Contact capacity
: 250 VDC/0.1 A (resistive load), 250 VAC (50/60 Hz)/3 A
