RKC INSTRUMENT RB100 User Manual

8. PARAMETER DESCRIPTION
IMR02C15-E4
8-108
Diagrams of the Set value action type are shown in the following:
ON: Event action turned on
OFF: Event action turned off
SV high SV low
When the Set value (SV) is more than When the Set value (SV) is less than
the Event set value, the event ON occurs. the Event set value, the event ON occurs.
 Input value action (High, Low)
When the Measured value (PV) reaches the Event set value, event ON occurs.
Diagrams of the input value action type are shown in the following.
ON: Event action turned on
OFF: Event action turned off
Process high Process low
When the Measured value (PV) is more than When the Measured value (PV) is less than
the Event set value, the event ON occurs. the Event set value, the event ON occurs.
 Heater Break Alarm (HBA)
Heater break alarm (HBA) can only be used with time-proportional control output (relay, voltage
pulse, or triac output).
The HBA function monitors the current flowing through the load by a dedicated current transformer
(CT), compares the measured value with the HBA set values, and detects a fault in the heating circuit.
Low or No current flow (Heater break, malfunction of the control device, etc.):
When the control output is ON and the CT input value is equal to or less than the heater break
determination point for the preset number of consecutive sampling cycles, an alarm is activated.
However, Heater break alarm is not activated when control output ON time is 0.5 second or less.
Over current or short-circuit:
When the control output is OFF and the CT input value is equal to or greater than the heater break
determination point for the preset number of consecutive sampling cycles, an alarm is activated.
However, Heater break alarm is not activated when control output OFF time is 0.5 second or less.
Set the set value to approximately 85 % of the maximum reading of the CT input.
Set the set value to a slightly smaller value to prevent a false alarm if the power supply
becomes unstable.
When more than one heater is connected in parallel, the HBA set value may need to be
increased to detect a single heater failure.
ON OFF
SV
Low High
☆
OFF ON
SV
Low High
☆
ON OFF
PV
Low High
☆
OFF ON
PV
Low High
☆
( : Set value (SV) : Event set value ☆: Event differential gap)
( : Set value (SV) : Event set value ☆: Event differential gap)

RKC INSTRUMENT RB100 Specifications

General

Brand	RKC INSTRUMENT
Model	RB100
Category	Temperature Controller
Language	English