Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

6 Wiring6.3.6 Interface Circuit6.3.6 Interface CircuitThis section shows examples of SERVOPACK I/O signal connection to the host controller.(1) Interface for Reference Input Circuits(a) Analog Input CircuitCN1 connector terminals, 5-6: Speed reference input and 9-10: Torque reference input are explained below.Analog signals are either speed or torque reference signals at the impedance below.• Reference speed input: About 14 kΩ• Reference torque input: About 14 kΩThe maximum allowable voltages for input signals is ±12 V.Analog Voltage Input CircuitAnalog Voltage Input Circuit (D/A)1.8 kΩ (1/2 W)min.SERVOPACKHost controllerSERVOPACK12 V325HP-10B2 kΩ 12V-REF orT-REFAbout 14 kΩSGD/AV-REF orT-REFSGAbout 14 kΩ0 V0 V(b) Position Reference Input CircuitCN1 connector terminals, 7-8: Reference pulse input, 11-12: Reference code input and 15-14: Clear input areexplained below.An output circuit for the reference pulse and position error pulse clear signal at the host controller can be eitherline-driver or open-collector outputs. The following shows by type.Line-driver Output CircuitHost controllerSERVOPACK150 Ω 4.7 kΩApplicable line driverSN75174 manufacturedby Texas Instrumentsor the equivalent2.8 V ≤ (H level) - (L level) ≤ 3.7 VOpen-collector Output, Example 1:Power Supply Provided by UserOpen-collector Output, Example 2:Using 12-V Power Supply Built into SERVOPACKHost controllerVccR1SERVOPACKi 150 Ω 4.7 kΩHost controllerSERVOPACKPL1, PL2, PL3 terminals1.0 kΩ+12 VV F150 ΩTr1About9 mAV F = 1.5 to 1.8 VUse the examples below to set pull-up resistor R1 so the inputcurrent, i, falls between 7 mA and 15 mA.Application ExamplesR1 = 2.2 kΩ with aVcc of 24 V ±5%R1 = 1 kΩ with aVcc of 12 V ±5%R1 = 180 Ω with aVcc of 5 V ±5%1.5 V max.when ON0 V6-16