10.2.3 Operation Modes Of Alarm Relays; Table 10-2 - Possible States Of The Alarm Contacts - GE Hydran 201 i Instruction Manual
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the H201Ci triggers a fail alarm, regardless of the H201Ti's fail alarm relay). As far as the
fail alarm relay, the coil is energized in normal operation (no alarm).
Table 9-1 on page 9-3 lists the possible states of all relays. The state of each relay can be
determined as follows:
• H201Ti:
– By displaying RelayH State, RelayHH State and SysOk State in the Relays/Analog
submenu.
– By looking at the LED's on the right side of the I/O module (see Figure 2-7 on
page 2-12).
– By verifying the state of the alarm contacts on the Alarm Contacts 9-Terminal Block
(item 12 in Figure 2-5 on page 2-9).
• H201Ci-1:
– By looking at the LED's on the circuit board (see items 13 to 18 in Figure 3-7 on
page 3-12).
– By verifying the status of the alarm contacts on the terminals 7 to 15 of the Main
Terminal Block (item 6 in Figure 3-6 on page 3-11).
– By looking at the illuminated 1 (High alarm) and 2 (High-High alarm) push-buttons
on the enclosure door.
• H201Ci-C: No alarms.
Table 10-2 on page 10-5 lists the possible states of the alarm contacts.
NO contact
NC contact
10.2.3 Operation Modes of Alarm Relays
The mode of each alarm relay is set using the corresponding RelayMode parameter in the
Hydran 201Ti's Relays/Analog submenu (or using the Hydran Host software). There are
four operation modes:
• Normal: See Section 10.2.3.1 on page 10-6.
• Latch: See Section 10.2.3.2 on page 10-6.
Part 17997
Table 10-2 - Possible States of the Alarm Contacts
Off
Contact open
Contact closed
Rev. 6, March 2011
On
Contact closed
Contact open
Alarm Relays
10-5
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