Yaskawa iQpump Controller Programming Manual - Manual (Page 71)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 71
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Function: Thermostat Fault (Setting: 83)
A digital input can be configured to indicate a Thermostat Fault from an external contact (H1-0x = 83). A contact closure into the multi-
function input will enable the Thermostat Fault. After an initiation of a Thermostat Fault, to disable the Thermostat Fault requires a open
digital input contact, the drive run command to be open and reset the Thermostat Fault via the drive's reset button or fault reset input.
Note: An OPE12 fault will occur if H1-xx = 83 and 87. H1-xx cannot be programmed to “83” and “87” at the same time.
Figure 1.53
Figure 53. Thermostat Fault on Operator
Figure 1.54
Figure 54. Wiring Diagram
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Function: Disable Pre-charge (Setting: 84)
A digital input can be configured to enable or disable the Pre-charge function (H1-0x = 84). A contact closure into the multi-function
digital input will disable the Pre-charge function independent of the value programmed into the Pre-charge Time (P4-03). When the
digital input is open, the Pre-charge function is enabled.
■ Function: Low Water Level (Setting: 85)
A digital input can be configured to indicate a Low Water Level Fault (H1-0x = 85). The Low Water Level input can be configured as a
normally open or normally closed contact by programming the Water DI Config (P1-15). When P1-15 = 0 or 2, a Low Water Level Fault
will occur when the contact is closed (normally open). An open contact will indicate the drive is operating under normal operating
conditions.
When P1-15 = 1 or 3, a Low Water Level Fault will occur when the contact is open (normally closed). A closed contact will indicate the
drive is operating under normal operating conditions.
If the Pre-charge function is activated, the Low Water Level will not cause a Low Water Level Fault. The Low Water Level will only
indicate that the Pre-charge function has been completed.
If the drive is operating under normal operating condition and a Low Water Level occurs, the drive will indicate a Low Water Level Fault
(LFB / LW) on the digital operator.
-DRIVE-
Thermostat
THMS
U2-04 =
U2-05 = 0.00 Hz
0.00 A
External Switch or
Relay Contact
Thermostat Fault
H1-04 = 83
(Thermostat FltNo)
S1
S2
S3 (H1-01
S4 (H1-02)
S5 (H1-03)
S6 (H1-04)
S7 (H1-05)
SC
SP 24 VDC +/- 20%, 8 mA
SN