Vw x y z – TOHO ELECTRONICS TTM-339 User Manual
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Turn off the power supply before cleaning the equipment, and wipe it with a soft dry cloth. Do not use thinners, as they
may cause deformation or discoloration of the equipment.
The equipment may cause radio disturbances in domestic settings. User is required to take appropriate measure.
Ensure to tighten terminal screws at specified torque. Insufficient tightening the screws may cause an electric shock or
fire.
Ensure to observe precautions listed in this manual for the use of the equipment.
Reprinting or duplicating this manual is prohibited.
This manual may be revised without prior notice.
Precaution regarding Export Trade Control Ordinance
Investigation on client or application by an appropriate party is required so that the equipment is not used for mass destruction
weapons and such (military application, military facilities, etc.).
Notation convention in this manual
★ Summary notation
Abbreviations in alphabetical characters are used for the diagrams and text in this manual. Some major examples are as
follows.
Abbreviation
Term
PV
Present value
SV
Setting value
AT
Auto-tuning
MV1
Primary operating amount
MV2
Secondary operating amount
CT
Current transformer
0
1
2
3
4
5
6
0
1
2
3
4
5
6
7
8
9
Minus
Period
Slash
7
8
9
-
.
/
A
B
C
D
E
F
G
A
B
C
D
E
F
G
H
I
J
K
L
M
N
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
O
P
Q
R
S
T
U
V
W
X
Y
Z
V
W
X
Y
Z