YASKAWA CPCR-MR08C Bulletin page 28

3.2.1 Speed Reference Circuit (Cont'd) TWO-CORE
TWISTED !"
SHIELDED CABLE
TWO-CORE TWISTED [_ 1
(2) For relatively Rough Speed Setting SHIELDED CABLE
! //_-\_ _!
,BkO,+WORMORE' ' t; IP+ I ":
_i k z _2
=+,ilOR B I __2
+vl ly+o,ii J .... .
Note: When a carbon resistor is used, a great residual resistance
(a) Types CPCR-MR01C (b) Types
CPCR-MR08C
remains, and so the speed control range becomes about 500:1.
to -M R07C to -M a9gc
Fig. 3.7 Method for Giving Speed Reference Fig. 3.9 Handling of Speed Reference
Voltage (for relatively Rough Speed Setting as Input Terminal
compared with Fig. 3.6)
3.2.2 Stop Reference Circuit 3.2.4 Auxiliary Input Terminal (4- 2 to 4- 10 V)
When commanding a stop, do not open the speed When using the auxiliary input terminals, adjust
reference circuit (terminal (_)or _)), but set to the input resistance to 3.3 kfl/V (i0 kfl for 3 V
to 0 V [Fig. 3.8 (a) and (b)]. rating, 33 kl_ for i0 V rating, for example).
1.8 k_ (_ W OR MORE)
3.3 BUILT-IN FUNCTION
LTYPE 25HP-10B13 RUN [ SERVOPACK
12 V - OREQUIVALENT[_"-""""_r_-J_ 1 _D c_
/ _ 2ka_l 2 _ 5FTOP]'" ...... 3.3.1 External Current Limiting Reference Circuit
Current can be limited from the outside as well as
withinServopack.
The external current limit is used for the follow-
(a) When Multiple-rotation Type, Wire ing cases:
Wound Variable Resistor is used
• To protect the motor from overload current when
1.8k_ RUN(ON)
an abnormal load lock occurs in the load.
(+ W OR MORE) _STOP (OFF) •
To change the current limitvalue according to
F4EE:3--o 0-7 [ SERVOPACK the external sequence.
• 1 ThYPE_V3v_YN+'3 '
12 V OR EQUIVALENT-NTCLI I_ _-
. urre t ,a e e
/
ting by the use of relays (Fig. 3.10). The same
effect can be obtained by giving voltage signals
making analog change.
(b) When Carbon Variable Resistor is used
Fig. 3.8 Method for Giving Stop Reference _ SI_'_I t14 SERVOPAOK
3.2.3 Handling of Speed Reference Input Terminal
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The unused terminal, out of the speed reference
terminal (_) and the auxiliary input terminal (_) ,
Relay: Low-level relay type G2A-432A made by
must be short-circuited to SG 0 V (terminal (_), OMRON Corporation.
which is then grounded (Fig. 3.9.) If it cannot
be grounded, the speed reference circuit and TG
Fig. 3.10 Multi-stage Switching of Current
feedback circuit must be carefully connected
to Value at Forward Side
prevent noise.
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