VESDA VFT-15 Product Guide
VESDA by Xtralis
38
www.xtralis.com
5.4.2
8-Channel, 4 - 20mA Output Module
The 8-Channel Output Module may be used for retransmission of airflow or smoke levels.
Note:
Not tested for UL/ULC Fire Alarm connection application.
Figure 5-5: 8-Channel, 4 - 20 mA Output Module
Description
Value
Number of analog current outputs
8
Maximum output voltage
20 V
Output current
4 - 20mA (optionally 0 - 20mA)
Resolution
16 bits
Maximum Integral Nonlinearity
±0.012%
Maximum Offset
±0.05%
Maximum total output error
±0.15%
Output update rate
1 per second; all 8 outputs updated
synchronously
Fault reporting
Detects a high load resistance (e.g. an
open circuit) on any output.
Table 5-10: 8-Channel Module Specifications
Note:
Unused outputs must have a load connected; otherwise the open circuit will be seen as a fault. A
resistor value in the range from 0 to 500Ω is suitable.
