Contactor configuration help
BMS web-page setup information » Contactor configuration help
Table of contactor configuration values & their application - note that your particular BMS may not provide for all of these configurations.
The selected contactor configuration value, 1 to 13, is entered when using the BMS configuration webpage. The MS Windows app & the configuration webpage will only accept those configuration options provided by your particular BMS:
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Contactor configuration no.
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BMS power outputs - all negative logic, ie low = on or TRUE
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Notes | ||||||
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Inbuilt MOSFET
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Inbuilt MOSFET
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Relay
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Fan
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Consumers (latching) |
Consumers (standard)
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Charger
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1
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not used
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not used
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not used |
normal
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not used
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not used
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not used
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2
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not used
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not used
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not used
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normal
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not used
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normal
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normal
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Normal contactors or solid-sate switch.
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3
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not used
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not used
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not used
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normal
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close latching
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open latching
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normal
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Use with Tyco BDS-A or similar latching contactor.
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4
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not used
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not used
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charger control
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normal
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not used
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normal
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normal
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Normal contactors or solid-sate switch.
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5
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not used
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not used
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non-critical load shed
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normal
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not used
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normal
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normal
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Normal contactors or solid-sate switch.
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6
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not used
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not used
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charger control
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normal
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close latching
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open latching
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normal
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Use with Tyco BDS-A or similar latching contactor.
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7
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not used
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not used
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non-critical load shed
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normal
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close latching
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open latching
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normal
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Use with Tyco BDS-A or similar latching contactor.
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8
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charger
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consumers
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soft start
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normal
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not used
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not used
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not used
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Inbuilt MOSFETs active for both charger & consumers control.
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9
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charger
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not used
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soft start
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normal
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not used
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normal
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not used
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Inbuilt MOSFET for charger control, normal external contactor for consumers control.
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10
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charger
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not used
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soft start
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normal
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close latching
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open latching
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not used
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Inbuilt MOSFET for charger control, latching external contactor for consumers control. For use with Tyco BDS-A or similar latching contactor.
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11
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not used
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consumers
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overheat alarm
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normal
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not used
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not used
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normal
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Inbuilt MOSFET for consumers control, normal external contactor for charger control.
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12
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not used
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not used
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overheat alarm
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normal
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not used
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normal
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normal
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Only normal external contactors used.
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13
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not used
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not used
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overheat alarm
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normal
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close latching
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open latching
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normal
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Only external contactors used, normal type for charger control & Tyco BDS-A or similar latching contactor for consumers control.
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Additional notes:
Refer to the installation & use manuals for connector pin numbers & more complete information; the following is a simple summary:
Normal contactors: Means a mechanical device where a coil energises a magnetic circuit. Solid-state devices may also be used.
Configuration 1: There are no charger or consumers controls, just an optional cooling fan connection responding to the remote sensed temperature.
Configuration 2: Individual standard contactors or relays for control of the charger & consumers, along with an optional cooling fan connection. Note that all external relays and contactors must include a parallel diode.
Configuration 3: Individual contactors or relays for control of the charger & consumers. The charger output drives a standard relay or contactor. The consumers control drives the two coils of a latching contactor. Use of the cooling fan connection is optional. Note that all external relays and contactors must include a parallel diode.
Configuration 4: Individual standard contactors or relays for control of the charger & consumers, along with an optional cooling fan connection. Note that all external relays and contactors must include a parallel diode. The relay output follows the charger output. Use of the cooling fan connection is optional. Note that all external relays and contactors must include a parallel diode.
Configuration 5: This is the same as configuration 4, except that the relay output can be used to disconnect non-essential loads when the battery is in a low state of charge.
Configuration 6: Individual contactors or relays for control of the charger & consumers. The charger output drives a standard relay or contactor. The consumers control drives the two coils of a latching contactor. The relay output follows the charger output. Use of the cooling fan connection is optional. Note that all external relays and contactors must include a parallel diode.
Configuration 7: Individual contactors or relays for control of the charger & consumers. The charger output drives a standard relay or contactor. The consumers control drives the two coils of a latching contactor. The relay output can be used to disconnect non-essential loads when the battery is in a low state of charge. Use of the cooling fan connection is optional. Note that all external relays and contactors must include a parallel diode.
Configuration 8: This configuration uses the inbuilt MOSFET power switches provided by some BMS types. The relay output may be used to drive an external device to soft-start a large capacitive load if required to supplement the BMS's own soft start. Use of the cooling fan connection is optional. Note that any external relays or contactors, if used, must include a parallel diode.
Configuration 9: This configuration uses the inbuilt MOSFET power switches for charger control only. Consumers control requires an external relay or contactor to be used. The relay output may be used to drive an external device to soft-start a large capacitive load if required to supplement the BMS's own soft start. Use of the cooling fan connection is optional. Note that any external relays or contactors must include a parallel diode.
Configuration 10: This is the same as configuration 9, except that the consumers outputs drive the two coils of a latching contactor rather than a conventional single coil device.
Configuration 11: This configuration uses the inbuilt MOSFET power switches for consumers control only. Charger control requires an external relay or contactor to be used. The relay output may be used to drive an external device & provides an alarm should an overheat condition occur. This alarm function is only available when the thermal sensor is connected - refer to the installation manual. Use of the cooling fan connection is optional. Note that any external relays or contactors must include a parallel diode.
Configuration 12: This is the same as configuration 2, except that the relay output is configured to drive an external device & provides an alarm should an overheat condition occur. This alarm function is only available when the thermal sensor is connected - refer to the installation manual. Use of the cooling fan connection is optional. Note that any external relays or contactors must include a parallel diode.
Configuration 13: This is the same as configuration 3, except that the relay output is configured to drive an external device & provides an alarm should an overheat condition occur. This alarm function is only available when the thermal sensor is connected - refer to the installation manual. Use of the cooling fan connection is optional. Note that any external relays or contactors must include a parallel diode.