Wordpress: ACF Excerpt From http://wordpress.org/support/topic/how-to-pull-excerpt-from-advanced-custom-field
function custom_field_excerpt($title) {
global $post;
$text = get_field($title);
if ( '' != $text ) {
$text = strip_shortcodes( $text );
$text = apply_filters('the_content', $text);
$text = str_replace(']]>', ']]>', $text);
$excerpt_length = 20; // 20 words
$excerpt_more = apply_filters('excerpt_more', ' ' . '[...]');
$text = wp_trim_words( $text, $excerpt_length, $excerpt_more );
}
return apply_filters('the_excerpt', $text);
}