Differences

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--- equipment:cnc:picomotor [2012/11/16 06:52] – mcmaster
+++ equipment:cnc:picomotor [2025/08/04 21:23] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+One thing I wasn't expecting to be prepared for.  Piezos are used for loudspeakers...drive frequency is 2 kHz.  Get it?  Very loud and annoying :P  They do however work well.
+They are also reasonably low torque.  Will do some experiments to see how they drive some of my linear stages.
 ====== Actuators ======
-Includes:
+Bare actuators:
   * 830X Picomotor Actuators
-  * 8401 rotary stage
+    * 8301-8341: standard
+      * In: 4 pin RJ-22
+    * 8301v-8341v: vacuum compatible, standard
+      * In: 4 pin teflon insulated RJ-22
   * 8351 Tiny Picomotor Actuator
+    * In: 4 pin RJ-22
   * 8310 closed loop driver
+    * In: 4 pin RJ-22 and HDDB-15M
+Units:
+    * 8051 fiber positioner
+      * In: 6 pin RJ-11
+    * 8071, 8081, 8082: 4/5 axis stages
+      * In: 2X 6-pin RJ-11
+    * 8095: 6 axis stage
+      * In: 6X 4-pin RJ-22
+    * 8401 rotary stage
+      * In: 1X 4-pin RJ-22
+    * 8807 mirror mount
+      * In: 2X 4-pin RJ-22
+    * 8808-8854: mirror mount
+      * In: 1X 6-pin RJ-11
+    * 888X: pint size mounts
+      * In: 2X 4-pin RJ-22
+"Note: The knob on the end of the drive screw provides inertial mass required for operation. Removal of the knob will prevent the Picomotor from functioning properly and void the warranty."
+====== Pinout ======
+-pin RJ-22:
+  * 1: NC
+  * 2: GND (power)
+  * 3: MOTOR
+  * 4: GND (motor)
+Has note saying that the two GNDs are electrically connected.
 ====== Driver ======
 There seem to be at least two different driver systems: "intelligent" / network system and stand alone drivers.
+"The Picomotor drivers generate the 130-V pulses required to drive the piezo in the Picomotor."
 ===== Network =====
-Basically a controller receives input from either a joystick, pendant, ethernet, or RS-232 which then relays a signal to RS-485 daisy chained (Distributed Control Network (DCN)) open and/or closed loop drivers.  Free Windows DLL available (advertised in manual, haven't looked into it).  Runs off of 24VDC using standard Phoenix Contact Combicon compatible quick disconnects.
+Basically a controller receives input from either a joystick, pendant, ethernet, or RS-232 which then relays a signal to RS-485 daisy chained (Distributed Control Network (DCN)) open and/or closed loop drivers.  Free Windows DLL available (advertised in manual, haven't looked into it).  Runs off of 24VDC (min/max varies) using standard Phoenix Contact Combicon compatible quick disconnects.
 Major family components:
@@ Line 21: / Line 62: @@
     * Does not support 8751-C driver
     * Does not support 8757 hand terminal
+    * 12-32VDC (some funny thing that you can really do 10-40VDC), < 100 mA at 24VDC
   * 8751 iPico closed loop driver
     * Used with 8310 actuator
     * Output: 1 4-pin single channel picomotor driver
+    * 12-32VDC, 17W typical @ 2kHz sustained speed
   * 8752 Intelligent Picomotor Ethernet Controller
     * Input: RS-232, joystick, or ethernet
@@ Line 30: / Line 73: @@
       * NOTE: requires firmware 1.5.0+
     * Supports 8757 hand terminal
+    * 12-32VDC (some funny thing that you can really do 10-40VDC), < 100 mA at 24VDC
   * 8753 iPico open loop driver
     * Output: 3 4-pin single channel picomotor driver
       * XXX: why 4 pins if its just a peizo?
     * Multi axis devices require 8725 multi-axis adapter
+    * 21-29VDC, 0.65A typ
   * 8754 iPoco joystick
     * Use directly with 8750 (or 8752 I presume)
@@ Line 53: / Line 98: @@
   * 8721 10' comm cable
   * 8722 Comm adapter
+    * Basically RS-485 <=> RS-232 adapter in place of 8750 or 8752
   * 8724 5" comm cable
   * 8725 multi-axis adapter
@@ Line 60: / Line 106: @@
+====== Precision / repeatability ======
+According to manual, step size varies considerably.  Standard drivers < 30 nm, Tiny < 100 nm.  From standstill or changing direction will cause significant variance.  Other factors include direction, load, temperature, and wear.