User`s manual

3
Specifications (when the modern function is not used)
Item
QJ71C24N
QJ71C24
QJ71C24N-R2
QJ71C24-R2
QJ71C24N-R4
RS-232
7/0. 127
P HRV-SV Outside diameter 8.5mm (0.33in.) or more
(Oki Electric Cable Co., Ltd. Applicable number is specified in
.)
Recommended
cable
RS-422/485
(*1)
SPEV (SB)-MPC-0.2
×
3P Outside diameter approx. 6.5mm (0.26 in.)
(Mitsubishi Cable Industries, LTD.)
SPEV(SB)-0.2
×
3P Outside diameter approx. 7.5mm (0.3 in.)
(Mitsubishi Cable Industries, LTD.)
Applicable connector for
external wiring
9 pin D-sub (male) screw type (*2) -
5V DC internal current
consumption
0.31A 0.26A 0.39A
External dimensions 98 (3.86 in.) (H) 27.4 (1.08 in.) (W) 90 (3.54 in.) (D)[mm]
Weight 0.20kg (0.44lb)
1: Recommended cables SPEV (SB)-MPC-0.2
×
3P and SPEV (SB)-0.2
×
3P
are equivalent in the electrical characteristics, but partially different in the
outside diameter, internal wire colors, etc.
2: Refer to Section 5.1 for the recommended cable.
3. Mounting and Installation
3.1 Handling Precautions
(1) Since the case of the module is made of resin, do not drop or apply strong
impact.
(2) Tighten the terminal block and module installation screws within the
specified torque range as follows:
Screw location Tightening torque range
RS-422/485 terminal block terminal screws (M3 screw) 42 to 58N•cm
RS-422/485 plug-in connector socket block terminal
screw for QJ71C24N-R4 (M2 screw)
20 to 25N•cm
Module fixing screw (normally not required) (M3 screw)
(
1)
36 to 48N•cm
1: The module can be simply fixed onto the base unit with a hook on the
module's upper part. However, for installation in an environment with
high vibration and/or strong impact, it is advisable to fix it with the
module fixing screws.
3.2 Installation Environment
For further details, refer to the user's manual for the CPU module.