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"
         },
         {
diff --git a/schemas/legacy.json b/schemas/legacy.json
index 2e355e5..071717f 100644
--- a/schemas/legacy.json
+++ b/schemas/legacy.json
@@ -266,6 +266,9 @@
                 "in0_Max": {
                     "$ref": "#/$defs/Types/in0_Max"
                 },
+                "in0_Min": {
+                    "$ref": "#/$defs/Types/in0_Min"
+                },
                 "in0_Name": {
                     "$ref": "#/$defs/Types/in0_Name"
                 },
@@ -1121,6 +1124,9 @@
             "in0_Max": {
                 "type": "number"
             },
+            "in0_Min": {
+                "type": "number"
+            },
             "in0_Name": {
                 "type": "string"
             },