It was a config problem and this is the right config I post it so may help someone.
[global]
logfile = /var/log/oscam.log
clientmaxidle = 0
unlockparental = 1
nice = -1
maxlogsize = 0
waitforcards = 0
preferlocalcards = 2
dropdups = 1
lb_mode = 10
[reader]
label = redlight
protocol = internal
device = /dev/sci0
caid = 0500
detect = cd
ident = 0500:050F00
group = 1
emmcache = 1,1,2,0
lb_weight = 300