Specifications

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224
APPLICATION INFORMATION (CONT’D)
COMPONENT HEADER
CONTINUOUS CURRENT LIMIT (RH3)
Icont (A) RH3 (Ω)
5 open *
4 20k
3 8.2k
2 3.9k
1 1.5k
INPUT TO OUTPUT GAIN SETTING ( RH6, RH7 )
Note 1
Example: Standard value of RH6 is 10kΩ, thus G = 1 A/V
PEAK CURRENT LIMIT (RH5) Note 3
Ipeak (A) RH5 (Ω)
10 open *
8 12k
6 4.7k
42k
2 750
LOAD INDUCTANCE SETTING (RH1 & CH2) Note 2
Load (mH) RH1 CH2
0.2 49.9 k 1.5 nF
1 150 k 1.5 nF
3 499 k 1.5 nF *
10 499 k 3.3 nF
33 499 k 6.8 nF
40 499 k 10 nF
Notes: * Standard values installed at factory are shown in italics.
1. RH6 & RH7 should be 1% resistors of same value.
2. Bandwidth and values of RH1, CH2 are affected by supply voltage and load inductance. Final selection should be
based on customer tests using actual motor at nominal supply voltage.
3. Peak current setting should always be greater than continuous current setting.
4. Peak times will double when current changes polarity. Peak times decrease as continuous current increases.
J1
J2
L
EDS
HEADER LOCATION
( COVER
REMOVED )
RH7
RH6
RH5
RH4
RH3
CH2
RH1
NOTE: Components in dotted lines are
LOAD INDUCTANCE SETTING
CONTINUOUS CURRENT LIMIT
PEAK CURRENT TIME LIMIT
PEAK CURRENT LIMIT
REFERENCE GAIN SETTING
not installed at factory
WARNING!
DISCONNECT POWER WHEN CHANGING HEADER
COMPONENTS. REPLACE COVER BEFORE APPLYING
POWER TO PREVENT CONTACT WITH LIVE PARTS.
Model 503
DC Brushless Servo Amplifier
PEAK CURRENT TIME-LIMIT (RH4) Note 4
Tpeak (s) RH4 (Ω)
0.5 open *
0.4 10 M
0.2 3.3 M
0.1 1 M
Times shown are for 10A step from 0A