40
Installation
Section 3-1
S
Power supply
The applicable power supply specifications are as follows.
Item
Value
Power supply
24 VDC
Allowable power supply voltage fluctuation range
20.4 VDC to 26.4 VDC
(24 VDC –15%, +10%)
Power supply voltage capacity
15 W or more
S
Parts used for connection
Note
For the connection to the power supply terminal block, twisted wires of 2 mm
2
or
greater cross sectional area and M3.5 size crimp terminals must be used.
Tighten the screws on the terminal block to a torque of 0.8 N
⋅
m.
Fork type
Round type
7 mm or less
7 mm or less
- Recommended terminals
Maker
Type
(fork type)
Type
(round type)
Applicable Wire
(stranded wire)
Japan Solderless Terminal MFG
2-YS3A
2-3.5
Fuji Terminal
2-YAS3.5
V2-S3.5
2.0 to 2.63 mm
2
Nichifu Terminal
2Y-3.5
2-3.5
3-1-4
Grounding
The NT31/NT31C has a functional ground terminal (
).
Carry out wiring under the following conditions.
(1) In cases where the distance between the NT31/NT31C is small and it is as-
sumed that there is no potential difference between grounds, ground as
shown in Fig. (a) below.
(2) In cases where there is a potential difference between the grounds of the
NT31/NT31C and the host, ground as shown in Fig. (b). If there is some dis-
tance between the NT31/NT31C and host and grounding at a single point is
difficult, do not connect the functional ground terminal (
) of the
NT31/NT31C.
(3) If the NT31/NT31C is installed in the same panel as equipment that generates
noise, such as a motor or inverter, do not ground the functional ground termi-
nal (
) of the NT31/NT31C.
Fig. (a)
Fig. (b)
Class 3
grounding
a single point
Grounding at
NT31/
NT31C
Host
NT31/
NT31C
Host
Notice
Carry out grounding correctly in order to prevent misoperation due to noise.
Summary of Contents for NT31 Series
Page 1: ...Cat No V043 E1 2 Programmable Terminal NT31 31C OPERATION MANUAL...
Page 2: ...iii NT31 31C Programmable Terminal Operation Manual Produced March 1999...
Page 41: ...30 Before Operating Section 1 5...
Page 75: ...64 Using a Memory Unit NT31 NT31C without V1 Section 3 6...
Page 160: ...149...
Page 174: ...163...
Page 193: ...182...
Page 211: ...200...
Page 235: ...224 c Return to the screen on which screens are specified...
Page 262: ...251...
Page 360: ...349 It is not possible to control a gloval window by touch switch operation...
Page 468: ...457 254 255 0 2 7 1 4 5 3 3 0 0 0 5 9 8 0 3...
Page 476: ...465 Special Functions Section 7 16...
Page 495: ...484 OFF...
Page 610: ...599 Commands Responses Section 9 3...
Page 630: ...619 Examples of Actual Applications of Memory Link Section 10 2...