The Heidenhain ERN1387 and Hengstler S21 are generic incremental encoders that have 1Vpp sine wave incremental outputs, unlike the more common HTL/TTL square wave output. And instead of using standard block commutation these encoders utilize a "Sin/Cos Commutation" 1ppr sine wave output in two channels offset by 90 degrees, effectively mimicking a 1 speed resolver. This commutation output seems to be used only for Siemens drives. If you find other brands of motor using these encoders, then they are likely intended for a Siemens drive as well. Page 25 in the Training Manual covers the testing on these types of sin/cos commutation encoders.
The TI-5101 1Vpp Adapter Module must be used with these sin/cos encoders in order to multiplex the C and D commutation channels into the A and B channel inputs. Dipswitch #1 on the TI-5101 must be set to the closed position in order to multiplex the C and D channels properly. (Note: dip switch #2 does not matter, so you can set it closed too just to make sure you have the right one). In the software, the 'Normal Commutation' radio button will test the ABZ pulses (typically 8,192 counts/rev), and the 'Sin/Cos Commutation' radio button controls a relay in the TI-5101 module to test the C and D commutation pulses. Encoder alignment should be done in the Normal Commutation mode.
In 'Sin/Cos Commutation' mode, turn the encoder to the mechanical angles listed below (ANG) and make sure the nominal voltages agree with the angle.
The Line Levels test in the Generic Incremental Encoder selection is intended for HTL/TTL square wave signals and is not as useful for these 1Vpp sine wave signals. Instead, try switching to any of the Heidenhain EnDat serial encoder selections to use the 1Vpp Line Levels test. As with all Heidenhain encoders, make sure to use 120 ohm resistors between the A/A* and B/B* signals for proper values.
Siemens motors test using the TI-5010 motor feedback cable with the TI-5101 module. Our TI-5090 test cable can also be used to test the encoder directly. Common Siemens power cables are the TI-3024 and TI-3030.
The standard Siemens alignment should be used in Normal Commutation mode:
+U-V=150E, and +U-W=210E.