edt-use-EDT-control-key-bindings is a variable defined in `edt.el'.
Its value is

Emacs MUST be restarted for a change in value to take effect!
Non-nil causes the control key bindings to be replaced with EDT
bindings. If set to nil (the default), EDT control key bindings are
not used and the current Emacs control key bindings are retained for
use within the EDT emulation.

You can customize this variable.