sap.SetCrypto(null, chain, null, PdfSignatureAppearance.WINCER_SIGNED); 
AND
byte[] tSsig = tSigner.GetEncodedPKCS7(); 

Is OK, the Problem is WINCER_SIGNED Create a Standard PPKMS With 
PdfName.ADOBE_PPKMS, PdfName.ADBE_PKCS7_SHA1

I Have solven the Problem By Replaye The Public Class PPKMS in
PdfSigGenericPKCS.cs ;)

        /**
           * Creates a standard filter of the type Windows Certificate.
        */    
        public class PPKMS : PdfSigGenericPKCS {
            /**
               * The constructor for the default provider.
            */        
            public PPKMS()
                : base(PdfName.ADOBE_PPKMS, PdfName.ADBE_PKCS7_DETACHED)
            {
                hashAlgorithm = "SHA1";
            }

        }

Geats
Volker
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