diff --git a/src/laser_diode/ld_pwr_exc_protector.rs b/src/laser_diode/ld_pwr_exc_protector.rs
index 114a734..01eaec3 100644
--- a/src/laser_diode/ld_pwr_exc_protector.rs
+++ b/src/laser_diode/ld_pwr_exc_protector.rs
@@ -211,12 +211,14 @@ impl LdPwrExcProtector {
 
     pub fn pwr_on_and_arm_protection() {
         if let Some(ref mut wdg) = LdPwrExcProtector::get() {
-            wdg.alarm_status = Status::default();
-            LdPwrExcProtector::clear_interrupt_bit();
-            LdPwrExcProtector::pwr_on();
-            // Interrupt should be enabled after power on to tackle the following edge case:
-            //      Pd_Mon pin voltage has already exceed threshold before LD Power is on.
-            LdPwrExcProtector::enable_watchdog_interrupt();
+            if !wdg.alarm_status.pwr_excursion {
+                wdg.alarm_status = Status::default();
+                LdPwrExcProtector::clear_interrupt_bit();
+                LdPwrExcProtector::pwr_on();
+                // Interrupt should be enabled after power on to tackle the following edge case:
+                //      Pd_Mon pin voltage has already exceed threshold before LD Power is on.
+                LdPwrExcProtector::enable_watchdog_interrupt();
+            }
         }
     }