I 6. 2 SPEED REFERENCE (2) For relatively rough speed setting
6.2.1 Speed Reference Circuit
From the SERVOPACK built-in control power (1CN-_, 1.8k£Z(_W OR OVER) _ SERVOPACK
@: +12V, 1CN-@, @, @, @: 0V, 1CN-@, @: -lZV) or ,,,._.v_u_Y. ,o1^
the external power, the speed reference voltage is given A.oREQUIVALENTS,2 !_1N'-12
12VT U : :
(1-14)*
to 1CN-@ and @ or to 1CN-(_ and (_. When the / 2k_ _1 |_
SERVOPACK built-in control power is used, the motor / 1 500:1 _ 1-13(1-15)*
speed fluctuates in the range of +2% of the speed set _ ..... _ ..............................
value.
_ Parenthesesare for auxiliary input.
The method for giving speed reference voltage is de- Note : When a carbon resistor is used, great residual resistance re-
scribed below, mains, so the speedcontrol range becomesabout 500 : ]
(1) For accurate (inching) speed setting Fig. 6.4 Method for Giving Speed Reference Voltage
(for relatively Rough Speed Setting
as compared with Fig. 6.3)
6.2.2 Stop Reference Circuit
SERVOPACK When commanding a stop, do not open the speed refer-
D t8kO (-}WOROVER) ence circuit (1CN:(_ or 1CN-(_)), but set to 0V.
r---1
ioTYPE 25 HP-10BTt 1-12 (1-14)* 1.8ka " ,_:_ •
a (+w OROVER) ._
R EQUIVALEN = 2 I t_l t _?_SERVOPACK
12V
T
/ RUN
' _ 1000 l_V J'- TYPE 25HP'10B r_l ----'" Jc'_
LC "I"OR EQUWALENT _ _ C ._ _'12 (I'14)*
L l _' ._'t3"1-1_*
25HP-]0B type : Multiple-rotation type, wire-wound variable
resistor (with dial MD]0-30B4) made by Sakae Tsushin Inco. (a) When Multiple-rotation Type,
Wire Wound Variable Resistor is used
D 1.8k_ RUN (ON) _ "
(a)
When
Multiple-rotation
Type,
Wire-Wound, Variable Resistor is used
, w OR OVER STOP (OFF) [_
r_EC3_o o_1 _ SERVOPACK
12V LTYPE RV30YN1_3 l_ 1 .
T OREQUIVALENT_ "12(1-14)
l 2k_ Y_ 2 i_,
, (+wOROVER)1, "(WOROVER) / ....!'
I _ rt132 (FORLow sPEED) SERVOPACK
TYPE RV3OYN TYPE RV3OYN
_J_OR EQRuVv30YIALENNJTYPEEQRU_30_IUIvAOR EQUIVALENTL_ O--_ (b) When Carbon Variable Resistor is used
12v 13 _ ill (FOR HIGH I
T Ollk II SPEEd)].
D l 2k_I-L_- 2 , _ - ( -12(1-14)* _ Parenthesesare for auxiliary input.
• l_1 L " 1 500:1 _ *
it-13(1-15) Fig. 6.5 Method for Giving Stop Reference
6.2.3 Handling of Speed Reference Input Terminal
RV30YN type : Carbon-film variable resistor made by Tokyo
Cosmos Electric. The unused terminals, out of the speed reference termi-
Low-and high-speed relays : Reed relays nals ICN-@, @ and the auxiliary input terminals 1CN-
Note : When a carbon resistor is used, great residual resistance (_, @ must be short-circuited.
remains, so the speedcontrol range becomesapproximately 500:1
6.2.4 Auxiliary Input Circuit (+2 to _+10V)
(b) When Carbon Variable Resistor is used Auxiliary input circuit is used for application at rated
reference voltage other than --+6V.
• Parentheses are for auxiliary input. " Adjustment procedures
Fig. 6.3 Method for Givrng Between 1CN-@ and @ (@ is 0V), input the voltage to
Speed Reference Voltage be used to set the rated speed, and adjust the potenti-
(for
Accurate
Speed
Setting)
ometer _B] so that the rated speed is achieved.
When combined with YASKAWA POSITIONPACK in
D positioning system drive, auxiliary input terminals are
normally used as speed reference input. In this case,
positioning loop gain is adjusted with the potentiome-
ter IIN-BI. For adjustment, be sure to refer to
POSITIONPACK instruction manuals.
-37-
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