
01
Ed. Date
S.Hanyu
Name
Newly designed
Detail of modification
Subject
DWG.No
Connection between
α
i series amplifiers
and Power Failure Backup Module
A-53866E-405
FANUC LTD
FANUC LTDFANUC LTD
FANUC LTD
Page
4/
5
21.Sept.’01
4. About
4. About 4. About
4. About the limit of the number of amplifiers connected to PSM
the limit of the number of amplifiers connected to PSMthe limit of the number of amplifiers connected to PSM
the limit of the number of amplifiers connected to PSM
In case that Power Failure Backup Module with control power backup function (A06B-6077-
H002) is connected to
α
i series PSM,
the number of amplifiers to which the control power 24V
can be supplied from PSM is limited.
The number
of amplifiers to which the control power 24V can be supplied from PSM
is defined
by the formula (4-1).
Number of
Number of Number of
Number of SVM1(*)
SVM1(*)SVM1(*)
SVM1(*) ×
× ×
× 1 + Number of SVM2
1 + Number of SVM2 1 + Number of SVM2
1 + Number of SVM2 ×
××
× 1.5 + Number of SVM3
1.5 + Number of SVM3 1.5 + Number of SVM3
1.5 + Number of SVM3 ×
××
× 2
2 2
2 ≤
≤≤
≤ N ------ (4-1)
N ------ (4-1) N ------ (4-1)
N ------ (4-1)
(*) Calculate 150mm width SVM1 (SVM1-360i) as SVM3.
(*) Calculate 150mm width SVM1 (SVM1-360i) as SVM3.(*) Calculate 150mm width SVM1 (SVM1-360i) as SVM3.
(*) Calculate 150mm width SVM1 (SVM1-360i) as SVM3.
In case of the normal system without Power Failure Backup Module, N=6.
In case that Power Failure Backup Module is connected to PSM, N in the formula (4-1) is
depend on the number of SPMs.
(1) In case that PSM is not 300mm width (PSM-55i).
1-1. In case that SPM is not connected.
The number of SVMs is not limited (N=6).
1-2. In case that 1 SPM is connected.
The number of SVMs is limited to N=5 in the formula (4-1).
1-3. In case that 2 SPMs are connected.
The number of SVMs is limited to N=4 in the formula (4-1).
(2) In case that PSM is 300mm width (PSM-55i).
1-1. In case that SPM is not connected.
The number of SVMs is not limited (N=6).
1-2. In case that 1 SPM is connected.
The number of SVMs is limited to N=4.5 in the formula (4-1).
1-3. In case that 2 SPMs are connected.
The number of SVMs is limited to N=3 in the formula (4-1).
(3) In case that 300mm width SPM (SPM-55i
is connected.
Subtract 1 per one SPM-55i from N in (1) 1-1, 1-2, 1-3 or (2) 1-1, 1-2, 1-3.
For example, in case that one SPM-5.5i is connected to PSM-55i, N=3.5 which is
calculated by subtracting 1 from N=4.5 in (2) 1-2.
In case that the number of
In case that the number of In case that the number of
In case that the number of SVMs connected to PSM
SVMs connected to PSM SVMs connected to PSM
SVMs connected to PSM
exceeds the number calculated above,
exceeds the number calculated above,exceeds the number calculated above,
exceeds the number calculated above,
supply the control power 24V of
supply the control power 24V of supply the control power 24V of
supply the control power 24V of SPMs from the external power supply equipment.
SPMs from the external power supply equipment.SPMs from the external power supply equipment.
SPMs from the external power supply equipment.
Refer to Section 5 about the connection to the external power supply equipment.
Refer to Section 5 about the connection to the external power supply equipment.Refer to Section 5 about the connection to the external power supply equipment.
Refer to Section 5 about the connection to the external power supply equipment.