Page
37
of
44
3.16
Retransmission
The controller can output (retransmit) PV or SP via its retransmission terminals RE+ and RE- provided that
the retransmission option is ordered. The correct signal type should be selected for option board to meet the
retransmission option installed. RELO and REHI are adjusted to specify the low scale and high scale values
of retransmission.
3.17
Heater Current Monitoring
A current transformer (TEC99999) is required to measure the heater current. The CT input
signal conditioner measures the heater current when the heater is powered (output 1 is on), and the current
value will remain unchanged while the heater is unpowered (output 1 is off). There are 1 or 2 CT inputs that
can be connected to the controllers depending on the model. The CT1R & CT2R paramters will indicate the
heater current.
Heater break detection is enabled by enabling the heater break detection setting “HBEN”. A
Heater break alarm (H.bK)
alerts the user when the current measured by CT1 is lower than the HB1T value
or when CT2 is lower than the HB2T value. When the current measured by CT1 in CT1R is higher than
HB1T+HBHY and CT2 in CT2R is higher than HB2T+HBHY, the heater break alarm will be off. The Heater
break alarm will be off when both CT values are in normal range. The Heater break alarm function will
only
be enabled when OUT1 is in the “on” condition.
Heater short detection is enabled by enabling heater short detection setting “HSEN”. A
Heater short alarm (H.St)
alerts the user when the current measured by CT1 is higher than the “HS1T” value
or when CT2 is higher than the “HS2T” value. When the current measured by CT1 is lower than HS1T-HSHY
and CT2 is lower than HS2T-HSHY, the heater short alarm will be off. The Heater short alarm will be off when
both CT values are in normal range. The Heater short alarm function will only be enabled when OUT1 is in off
condition.
Accessory Installed
TEC99999
Required Setup Parameters
Heater Break
1.
HBEN
2.
HBHY
3.
HB1T
4.
HB2T
Heater Short
1.
HSEN
2.
HSHY
3.
HS1T
4.
HS2T
Содержание TEC-2400
Страница 20: ...Page 20 of 44 2 3 2 TEC 9400 Terminal Connection 2 3 3 TEC 8400 TEC 4400 Terminal Connection...
Страница 21: ...Page 21 of 44 2 3 4 TEC 8450 Terminal Connection 2 3 5 TEC 7400 Terminal Connection...
Страница 22: ...Page 22 of 44 2 3 6 TEC 6400 Terminal Connection 2 4 Wiring Example Contactor...
