User’s Manual
43
PART 2 DA264
4. Wiring
4.3 Wiring precautions
(1) Use shielded twisted-pair cables for analog output signal lines and wire them in shortest
distance. Connect the cable shield to ground in shortest distance for EMC conformity.
Normally the grounding method (a) is recommended. However, depending on the condition,
method (b) or (c) may be useful for stable operation.
(2) Separate the analog signal cable from other cables to prevent noise interference. (200mm
or more)
(3) This module requires 24Vdc power. Apply the 24Vdc power before (or at the same time)
applying T2’s main power. Otherwise, this module detects the external 24Vdc error.
(4) If the external 24Vdc power for this module is not stable, the converted data will not be
stable. In this case, use a dedicated 24Vdc power supply for this module.
(5) When the external 24Vdc power is applied, about 0.7V voltage will output for few ms
(milliseconds). Therefore the power-up sequence should be as follows.
External 24Vdc
→
T2 main power
→
Power for output load
(a)
Analog
output
module
(b)
Analog
output
module
(c)
Analog
output
module
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: [email protected]
