Hitachi WL200 Series

Chapter 8 PROFINET Specification
37
8.10 NSOLL_A / NIST_A
NSOLL_A is Speed setpoint A, means the setting of output frequency. Inverter runs this setting at not
jogging but normal operation. When inverter runs at jogging, inverter runs not NSOLL_A but A038 of
WJ200 / WL200 parameter.
NIST_A is Speed actual value A, means the actual output frequency. This value means the actual
output frequency at both normal and jogging operations.
The size of these is signed 16 bits data. The sign means direction of rotation. The positive value
means forward, the negative value means reverse. However, the actual direction of rotation depends
on both the sign of NSOLL_A and STW1 bit11.
STW1
bit11
ON
OFF
NSOLL_A
Positive
Reverse
Forward
Negative
Forward
Reverse
The data type of these is N2. The value of N2 means the following.
Value
Significance
-32768
(0x8000)
-200 %
-32767 ～ -1
(0x8001 ～ 0xFFFF)
-199.993896484375 % ～
-0.0061 %
-16384
(0xC000)
-100 %
0
(0x0)
0 %
16384
(0x4000)
100 %
1 ～ 32766
(0x1 ～ 0x7FFE)
0.0061 % ～ 199.98779296875 %
32767
(0x7FFF)
199.993896484375 %
The base frequency of these is set A004 of WJ200 / WL200 parameter.
[Example]
When A004 = 60.0 [Hz] and NSOLL_A = 8192 (0x2000 : 50%), inverter runs 30.0 [Hz].
When the absolute value of NSOLL_A is over 100%, inverter runs 100%.
NIST_A always depends on A004 even if inverter runs at jogging operation. Therefore, when the
output frequency reaches the jogging frequency (A038), NIST_A doesn’t equal NSOLL_A. However,
STW1 Bit8 becomes ON.
[Example]
When A004 = 60.0 [Hz], A038 = 6.00 [Hz] and NSOLL_A = 16384 (0x4000 : 100%), inverter runs
6.0 [Hz] By jogging and NIST_A becomes 1638 (0x666 : 10%).