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

8 Operation8.5.6 Using the Zero Clamp Function(2) Parameter SettingParameterMeaningPn000 n.A Control mode selection: Speed control (analog voltage reference) ⇔ Zero clampZero Clamp ConditionsZero clamp is performed with Pn000 = n.A when the following two conditions are satisfied:• /P-CON (/ZCLAMP) is ON (low level).• Speed reference (V-REF) drops below the setting of Pn501.Speed referenceZero clampV-REF/P-CON(/ZCLAMP)SERVOPACKCN1541Preset valuefor zero clampingPn501Speed/P-CON (/ZCLAMP) inputOpen (OFF)V-REF speed referenceClosed (ON)TimeZero clamp is performed.OFFOFFON ON ONPn501 Zero Clamp LevelSpeedSetting Range Setting Unit Factory Setting Setting Validation0 to 10000 min -1 10 ImmediatelySets the motor speed at which the zero clamp is performed if zero clamp speed control (Pn000 = n.A) is selected.Even if this value is set higher than the maximum speed of the servomotor, the maximum speed will be used.(3) Input Signal SettingType Signal Name Connector Pin SettingMeaningNumberInput /P-CON CN1-41 ON (low level) Zero clamp function ON (enabled)OFF (high level) Zero clamp function OFF (disabled)/ZCLAMP Must be allocated ON (low level) Zero clamp function ON (enabled)OFF (high level) Zero clamp function OFF (disabled)This is the input signal for the zero clamp operation.Either /P-CON or /ZCLAMP can be used to switch the zero clamp.To use the /ZCLAMP signal, an input signal must be allocated. Refer to 7.3.2 Input Circuit Signal Allocation for moredetails.• IMPORTANTWhen the /ZCLAMP signal is allocated, the zero clamp operation will be used even for speed control Pn000 = n.0.8-44