Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question

Revision history [back]

click to hide/show revision 1
initial version

EMS Actuator using nodal values

Hi All,

I'm having trouble overwriting the nodal mass flow rate of a water heater.

In the Actuator object in EMS I have:

Name : MassFlow Actuated Component Unique Name: Aux HW Loop HP Water Heater Water Outlet Node

Actuated Component Type: System Node

Actuated Component Control Type: Mass Flow Rate

I copied the Unique Name, Type, and Control Type from EDD file as shown from the contents below: EnergyManagementSystem:Actuator Available,AUX HW LOOP HP WATER HEATER WATER OUTLET NODE,System Node Setpoint,Mass Flow Rate Setpoint,[kg/s]

I get an error message both as shown above and with the Setpoint add to the last two field names. The message reads:

* Severe * GetRuntimeLanguageUserInput: EnergyManagementSystem:GlobalVariable, invalid entry. * ~~~ * Invalid Erl Variable 1 Name=MASSFLOW * ~~~ * Name conflicts with an existing global variable name I get the same error message with names different from MassFlow. I have a EMS program to calculate the MassFlow and entered it as a global variable.

I would appreciate any assistance.

Sincerely,

Ron

EMS Actuator using nodal values

Hi All,

I'm having trouble overwriting the nodal mass flow rate of a water heater.

In the Actuator object in EMS I have:

Name : MassFlow Actuated Component Unique Name: Aux HW Loop HP Water Heater Water Outlet Node

Actuated Component Type: System Node

Actuated Component Control Type: Mass Flow Rate

I copied the Unique Name, Type, and Control Type from EDD file as shown from the contents below: EnergyManagementSystem:Actuator Available,AUX HW LOOP HP WATER HEATER WATER OUTLET NODE,System Node Setpoint,Mass Flow Rate Setpoint,[kg/s]

I get an error message both as shown above and with the Setpoint add to the last two field names. The message reads:

* Severe * GetRuntimeLanguageUserInput: EnergyManagementSystem:GlobalVariable, invalid entry. * ~~~ * Invalid Erl Variable 1 Name=MASSFLOW * ~~~ * Name conflicts with an existing global variable name I get the same error message with names different from MassFlow. I have a EMS program to calculate the MassFlow and entered it as a global variable.

I would appreciate any assistance.

Sincerely,

Ron