GE B30 Instruction Manual page 469

CHAPTER 5: SETTINGS
The latching output modules, either as part of the relay or as individual modules, are shipped from the factory with all
latching contacts open. It is highly recommended to double-check the programming and positions of the latching contacts
when replacing a module.
Since the relay asserts the output contact and reads back its position, it is possible to incorporate self-monitoring
capabilities for the latching outputs. If any latching outputs exhibits a discrepancy, the LATCHING OUTPUT ERROR self-test
error is declared. The error is signaled by the
— This setting specifies a FlexLogic operand to operate the 'close coil' of the contact. The relay seals-
OUTPUT H1a OPERATE
in this input to safely close the contact. Once the contact is closed and the
input, such as subsequent chattering, does not have any effect. With both the
OPERATE
(logic 1), the response of the latching contact is specified by the
— This setting specifies a FlexLogic operand to operate the 'trip coil' of the contact. The relay seals-in
OUTPUT H1a RESET
this input to safely open the contact. Once the contact is opened and the
input, such as subsequent chattering, does not have any effect. With both the
RESET
1), the response of the latching contact is specified by the
— This setting specifies the contact response under conflicting control inputs; that is, when both the
OUTPUT H1a TYPE
and signals are applied. With both control inputs applied simultaneously, the contact closes if set to
OPERATE RESET
"Operate-dominant" and opens if set to "Reset-dominant."
Figure 5-142: Contact input/output module type 4L contact 1 logic
Application example 1
A latching output contact H1a is to be controlled from two user-programmable pushbuttons (buttons number 1 and 2). The
following settings are applied.
Program the Latching Outputs by making the following changes in the
OUTPUTS  CONTACT OUTPUT H1a
: "PUSHBUTTON 1
OUTPUT H1a OPERATE
: "PUSHBUTTON 2
OUTPUT H1a RESET
Program the pushbuttons by making the following changes in the
and
 USER PUSHBUTTON 1 USER PUSHBUTTON 2
PUSHBUTTON 1 FUNCTION
PUSHBTN 1 DROP-OUT TIME
PUSHBUTTON 2 FUNCTION
PUSHBTN 2 DROP-OUT TIME
Application example 2
A relay, having two latching contacts H1a and H1c, is to be programmed. The H1a contact is to be a Type-a contact, while
the H1c contact is to be a Type-b contact (Type-a means closed after exercising the operate input; Type-b means closed
after exercising the reset input). The relay is to be controlled from virtual outputs: VO1 to operate and VO2 to reset.
Program the Latching Outputs by making the following changes in the
OUTPUTS  CONTACT OUTPUT H1a
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
LATCHING OUT ERROR
OUTPUT H1a TYPE
menu (assuming an H4L module):
ON"
ON"
menus:
: "Self-reset"
: "0.00 s"
: "Self-reset"
: "0.00 s"
and
CONTACT OUTPUT H1c
FlexLogic operand, event, and target message.
input is logic 0 (off), any activity of the
RESET
OPERATE
setting.
OUTPUT H1a TYPE
input is logic 0 (off), any activity of the
OPERATE
OPERATE
setting.
SETTINGS  INPUTS/OUTPUTS  CONTACT
PRODUCT SETUP  USER-PROGRAMMABLE PUSHBUTTONS
SETTINGS  INPUTS/OUTPUTS  CONTACT
menus (assuming an H4L module):
INPUTS/OUTPUTS
and inputs active
RESET
and inputs active (logic
RESET
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