diff --git a/configurations/catalina_pdb.json b/configurations/catalina_pdb.json
index 3aa5ace..1e4e589 100644
--- a/configurations/catalina_pdb.json
+++ b/configurations/catalina_pdb.json
@@ -388,6 +388,8 @@
             ],
             "Name": "PDB_POSITIVE_VDROP_INA238",
             "Type": "INA238",
+            "in0_Max": 1,
+            "in0_Min": -1,
             "in0_Name": "PDB_POSITIVE_VDROP_VOLT_V"
         },
         {
@@ -398,6 +400,8 @@
             ],
             "Name": "PDB_RETURN_VDROP_INA238",
             "Type": "INA238",
+            "in0_Max": 1,
+            "in0_Min": -1,
             "in0_Name": "PDB_RETURN_VDROP_VOLT_V"
         },
         {