A control system (40, 122) having processing and memory circuitry, characterized by the memory circuitry storing a motor temperature-based capacity control scheme for a chiller system and the processing circuitry being configured to perform the motor temperature-based capacity control scheme, wherein the motor temperature-based capacity control scheme is performed as a function of a monitored temperature in a motor configured to drive a compressor of the chiller system, a first temperature threshold corresponding to the monitored temperature, and a second temperature threshold corresponding to the monitored temperature higher than the first temperature threshold, the motor temperature-based capacity control scheme comprising: - a maximum allowed capacity control output region corresponding to a temperature range at and below the first temperature threshold, wherein the maximum capacity control is allowed; - a load limiting region corresponding to a temperature range between the first temperature threshold and the second temperature threshold, wherein the load limiting region is configured to proportionally limit loading of the chiller system based on an amount by which the monitored temperature has exceeded the first temperature threshold; and - an override region associated with a temperature range above the second threshold and below a chiller shutdown temperature, wherein the override region is configured to proportionally unload the chiller system based on the amount by which the monitored temperature has exceeded the second temperature threshold. characterized by the memory circuitry storing a motor temperature-based capacity control scheme for a chiller system and the processing circuitry being configured to perform the motor temperature-based capacity control scheme, wherein the motor temperature-based capacity control scheme is performed as a function of a monitored temperature in a motor configured to drive a compressor of the chiller system, a first temperature threshold corresponding to the monitored temperature, and a second temperature threshold corresponding to the monitored temperature higher than the first temperature threshold, the motor temperature-based capacity control scheme comprising: - a maximum allowed capacity control output region corresponding to a temperature range at and below the first temperature threshold, wherein the maximum capacity control is allowed; - a load limiting region corresponding to a temperature range between the first temperature threshold and the second temperature threshold, wherein the load limiting region is configured to proportionally limit loading of the chiller system based on an amount by which the monitored temperature has exceeded the first temperature threshold; and - an override region associated with a temperature range above the second threshold and below a chiller shutdown temperature, wherein the override region is configured to proportionally unload the chiller system based on the amount by which the monitored temperature has exceeded the second temperature threshold. - a maximum allowed capacity control output region corresponding to a temperature range at and below the first temperature threshold, wherein the maximum capacity control is allowed; - a load limiting region corresponding to a temperature range between the first temperature threshold and the second temperature threshold, wherein the load limiting region is configured to proportionally limit loading of the chiller system based on an amount by which the monitored temperature has exceeded the first temperature threshold; and - an override region associated with a temperature range above the second threshold and below a chiller shutdown temperature, wherein the override region is configured to proportionally unload the chiller system based on the amount by which the monitored temperature has exceeded the second temperature threshold.