Nor-Cal SDC15 Controller - Manual (Page 102)

■ MV1/MV2 process
The Time proportional cycle and time proportional cycle mode of MV1/MV2 can
be set.
• MV1 is a general name of the ON/OFF control output, time proportional output,
and time proportional output (heat) of the Heat/Cool control.
MV2 is the time proportional output (cool) of the Heat/Cool control.
• When MV1 is connected to any of the relay control output, voltage pulse control
output, and event output in the DO Assignment, the display and setting of the
Time proportional cycle 1 (Cy) can be made.
• When the Heat/Cool control is used and MV2 is connected to any of the relay
control output, voltage pulse control output, and event output in the DO
Assignment, the display and setting of the Time proportional cycle 2 (Cy2) can
be made.
• The initial value of the Time proportional cycle 1 (Cy) is “10” when the control
output 1 is the relay output and it is “2” in other cases.
• The initial value of the Time proportional cycle 2 (Cy2) is “10” when a model
with one control output point is used and it is “2” when other models are used.
• The setting of the time proportional cycle mode (tp.ty) is valid to the time
proportional outputs of both MV1 and MV2.
• When MV1 is connected to the relay control output or event output in the DO
Assignment and the Time proportional cycle 1 (Cy) is set at less than “5s”, the
operation is performed at intervals of 5s.
• When MV2 is connected to the relay control output or event output in the DO
Assignment and the Time proportional cycle 2 (Cy2) is set at less than “5s”, the
operation is performed at intervals of 5s.
5-52
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
Item (Setting display/bank) Display Contents Initial value User level
Time proportional cycle 1
(For MV1)
(Parameter
setting/Parameter bank) 5 to 120s (Output includes the relay output.)
1 to 120s (Output does not include the relay
output.) 10 or 2s Simple,
Standard,
High function
Time proportional cycle 2
(For MV2)
(Parameter
setting/Parameter bank) 10 or 2s
Time proportional cycle
mode
(Parameter
setting/Parameter bank) 0: Controllability aiming type
1: Operation service life aiming type (ON/OFF
operation is performed only once within the
Time proportional cycle.
0 or 1 High function