Max number of signals per time supported?

I am testing a strategy than can generate between 20-100+ orders per day. I made a program to send the signals through the http protocol.

Today I had a batch of 80 orders and half way to placing the orders I got the error “Too many signals in a short amount of time”. I haven’t been able to place any more signals, however I can place more orders from the web interface.

Can you let me know what the limits are so I can put appropriate timers between http calls? Also what is the max number of signal a system can have at any point? Thanks in advance