Glentek Inc. 208 Standard Street, El Segundo, California 90245, U.S.A. (310) 322
SMA7130, SMA71075 and SMA71100 MANUAL
Signal Input Voltage
VDC
(maximum)
Impedance
(minimum)
ohms
Velocity Gain
Amp./Volt
Current Gain
Amp./Volt
Differential ±13 10,000 15,000 0-5
Single-ended ±50 4,000 15,000 0-5
Tachometer input ±50 10,000 7,000
1.3 Specifications:
1.3.1 Stand-Alone Amplifier (SMA7130-1A-1, SMA71075-1A-1, SMA71100-1A-1):
The amplifier requires external AC power. Forced air cooling is required to meet the maximum power
ratings specified below.
1.3.1.1 Input and Output Power:
1.3.1.3 Digital Inputs:
• ±Limit, Inhibit and Reset: +24V max. Terminated by 10K ohms.
• Fault (as input): +40V/-5v max. Terminated by 10K ohms.
• Typical for all digital inputs: Digital inputs have hysteresis with thresholds at 1/3 and 2/3 of +5V or
+15V depending on range selected.
1.3.1.4 System:
• Drift offset over temperature reference to input: 0.01mV/
o
C max.
• Frequency response (Velocity loop): 750Hz min.
• Frequency response (Current loop): 2KHz min.
• Dead band: None.
• Form factor: 1.01.
1.3.1.5 Outputs:
• Fault (as output): Active low. Open-collector output can sink 75mA max. through 10 ohms.
• Absolute motor current: Bipolar output. 1V=10A for SMA7130; 1V=40A for SMA71075 &
SMA71100. 10mA max.
CHAPTER 1: DESCRIPTION, FEATURES AND SPECIFICATIONS
Amplifier
Model
AC
Input
Voltage
R.M.S. Peak
SMA7130-1A-1 120 30A 60A
SMA71075-1A-1 120 75A 150A
SMA71100-1A-1 120 100A 150A
Output Power
(Current)
1.3.1.2 Signal Inputs:
1.3.1.6 Mechanical:
Model L x W x H
(inches)
Weight
(lbs)
SMA7130-1A-1 14.50 x 4.25 x 8.81 11.00
SMA71075-1A-1 17.63 x 5.75 x 12.40 28.00
SMA71100-1A-1 17.63 x 5.75 x 12.40 28.00
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