Owner`s manual
VANNER
Incorporated OWNER’S MANUAL
PMEC-12/24 OWNER‟S MANUAL
7
Load Control
There are two load outputs, labeled as Load A and Load B.
Both loads will be shut off if the battery SOC is less than SOC_LoadOff, which can be set through the
CAN bus.
Each load will be shut off if the corresponding load current is higher than its Load?Limit, which can be
set through the CAN bus. (Here „?‟ denotes either A or B.)
Loads are also controlled based on the status of the following inputs:
Park Switch
Hood Switch
Auto Start
Ignition
Key Sense
When ignition is off and Auto Start is enabled, both Load A and Load B are turned on. When key is in
or hood is open, Auto Start will be disabled. When ignition is on but transmission is still on park, both
Load A and Load B will be turned off. When ignition is on and transmission is out of park (driving
mode), Load B will be turned on while Load A is turned off.
Note: A zero to sixty second user configurable time delay, LoadBOffDelay, is present to delay Load B
turning off after putting the transmission in park.
Key Sense and System Voltage Level Configuration
Key sense signal can be configured via CAN bus. It can be configured as
Active High
Active Low
Not Available
If key sense is not available, ignition switch status will be used to control and Auto Start and Loads.
System voltage level can be configured via CAN bus. The available configurations are
Single 12V – with only 12V battery and loads
Single 24V – with two 12V batteries connected in series. Only 24V loads are used
Dual 24V/12V – with two 12V batteries connected in series. Both 24V loads and 12V loads are
available
Note: Do NOT change Nj (number of cells per battery) from 6 to 12 for 24V system. Choose
appropriate system voltage level instead. Reference the table below to assist with selecting the
proper battery parameter profile for your battery configuration.
Profile
Nj
Nb
Voltage Level
0,2,4,6
6
1
24/12V Dual
0,2,4,6
6
1
24V Single
0,2,4,6
6
1
12V Single
1,3,5,7
6
2
24/12V Dual
1,3,5,7
6
2
24V Single
1,3,5,7
6
2
12V Single
Configuration
+24V
GND
+24V
+12V
GND
+
-
+
-
+
-
+
-
+12V
GND
+
-
+24V
+12V
GND
+
-
+
-
+
-
+
-
+24V
GND
+
-
+
-
+
-
+
-
+12V
GND
+
-
+
-