I didn't know Binance offered such service so did some digging and found the following information:

Quote from: bitcoin0001 on May 16, 2020, 06:17:00 AM

Could someone please walk me through an example:

Loan Amount: 10,000 USD
Collateral: 1.7 Bitcoin

Now it's where I am getting confused.

Margin Call: 75%
Liquidation LTV: 83%

How do I calculate the margin call and the LTV in this example? What are the values than?

This is the formula for LTV...

10,000 $ /1.7 BTC ^{[16,180 $ = current preev rate]} x 100%
= 61.80%

And this is how you can calculate for other values in margin call and liquidation percentages:

For 75% use 10,000 $ / 0.75 = 13,333 $ ^{[1.402 BTC = current preev rate]}
For 83% use 10,000 $ / 0.83 = 12,048 $ ^{[1.270 BTC = current preev rate]}

Quote from: bitcoin0001 on May 16, 2020, 06:17:00 AM

What happens if bitcoin crashes? Do I get automatically liquidated or is there a certain time frame I can top up? I am not permanently at my computer if I am taking a loan for 90 days for example. Is there a grace period to top up?

It depends on the crash...
- If it reaches or goes beyond the Liquidation LTV ^[83%], "it does the liquidation process automatically ^{[no grace period]}".

Useful information:

^{- Loan-To-Value (LTV)
- How to use “Binance Loans” Service
- Binance Loans User Manual}