19 Errors & Lockouts
Mk8 MM Manual Page | 371
19 ERRORS AND LOCKOUTS
19.1 Errors
Errors occur when the MM detects an internal fault, component out of range, internal check failure or power
supply issue. To clear an error, the MM must be restarted.
Channel 1 Positioning Error
Servomotor is outside of the commissioned range
• Check wiring on terminals 40 – 42
• Check signal cable from the MM to the servomotor is screened at one end
• Check potentiometer is zeroed correctly
• Go into Commissioning mode, check the servomotor position and ensure that closed is at 0.0°
Channel 2 Positioning Error
Servomotor is outside of the commissioned range
• Check wiring on terminals 40, 41, 43
• Check signal cable from the MM to the servomotor is screened at one end
• Check potentiometer is zeroed correctly
• Go into Commissioning mode, check the servomotor position and ensure that closed is at 0.0°
Channel 3 Positioning Error
Servomotor is outside of the commissioned range
• Check wiring on terminals 44, 46, 47
• Check signal cable from the MM to the servomotor is screened at one end
• Check potentiometer is zeroed correctly
• Go into Commissioning mode, check the servomotor position and ensure that closed is at 0.0°
Channel 4 Positioning Error
Servomotor is outside of the commissioned range
• Check wiring on terminals 45 – 47
• Check signal cable from the MM to the servomotor is screened at one end
• Check potentiometer is zeroed correctly
• Go into Commissioning mode, check the servomotor position and ensure that closed is at 0.0°
Channel 7 Positioning Error
Servomotor is outside of the commissioned range
• Check wiring on terminals DP-, DP+, DPW
• Check signal cable from the MM to the servomotor is screened at one end
• Check potentiometer is zeroed correctly
• Go into Commissioning mode, check the servomotor position and ensure that closed is at 0.0°
Servomotor position measurement hardware error
• Check wiring and voltages on terminals 40 – 42 and 70 – 71
Servomotor position measurement hardware error
• Check wiring and voltages on terminals 40, 41, 43 and 72 – 73
Servomotor position measurement hardware error
• Check wiring and voltages on terminals 44, 46, 47 and 74 – 75
Servomotor position measurement hardware error
• Check wiring and voltages on terminals 45 – 47 and 76 – 77
Servomotor position measurement hardware error
• Check wiring and voltages on terminals DP-, DP+, DPW and DCI, DCD
Servomotor moves when not expected and vice versa
• Check wiring and voltages on terminals 70 & 71
• Check servomotors drive in correct direction and valve is not stuck
Servomotor moves when not expected and vice versa
• Check wiring and voltages on terminals and 72 and 73
• Check servomotors drive in correct direction and damper is not stuck