The form factor of the 690+ Frame B lends itself to various hardware differences from the rest of the frame sizes.
These are called out in the manual and can be found by following this [QuickLink for the 690+ on Parker.com].
They include but are not limited to:
- Only one possible techbox option that replaces the keypad
- Optional internal AC supply EMC filter option
- Single phase input mains capability
- 50Hz +/- 5% or 60Hz +/-5% allowable tolerance on input mains