81901A “MSW_GPC-40/600A”_03-2021_ENG_page 63
3.14.1. Enabling alarms
See paragraph “3.13.1. Enable alarms”.
3.14.2. HB alarm function
Address
Format
GPC-OP
menu
Acronym GF_eXpress menu
Attribute
Retentive
Type
Unit of mea-
surement
Default
Single-
node
Multi-
node
Description
1081
57 16 bit
05.04.01
Hb.F
M
MainMenu → M → Alarms →
HB alarm → Hb.F_1
R/W
■
Unsigned
Short
see
table
2105 05.05.01 E1
MainMenu → E1 → Alarms →
HB alarm → Hb.F_2
4153 05.06.01 E2
MainMenu → E2 → Alarms →
HB alarm → Hb.F_3
The parameter sets the function of the HB alarm via an index.
With a single-phase load, the alarm thresholds A.Hb_1, A.Hb_2 and A.Hb_3 refer to the respective module.
With a three-phase load, the reference thresholds are A.Hb_1, A.Hb_2 and A.Hb_3 with OR of the states between phases 1, 2 and 3.
With a two-phase load, the reference thresholds are A.Hb_1 e A.Hb_2 with OR of the states between phases 1 and 2.
Default
GPC-M GPC-E1 GPC-E2
Single-phase load 0 0 0
Three-phase or two-
phase load
16 16 16
Options:
Index Function description
0
Can be used with relay or logic output. The alarm is active when the load current value is lower than the threshold set
for the ON time of the SSR control output.
1
Can be used with relay or logic output. The alarm is active when the load current value is higher than the threshold set
for the OFF time of the SSR control output.
2
The alarm is active if one of the functions 0 and 1 is active (logical OR between functions 0 and 1). For function 1, the
threshold is considered to be 12% of the ammeter full scale H.tA_x.
3
Continuous heating alarm. The alarm is active when the load current value is lower than the threshold value in A.Hb_x.
The alarm does not refer to the cycle time and is disabled if the heating output value is less than 3%. The setting A.Hb_x
= 0 disables the HB alarm by forcing its state to off.
Notes:
The alarm is automatically reset when the condition that caused it is removed.
Increasing the index by a fixed amount results in the following behaviours:
Index +8 = HB alarm is reversed.
Index +16 = Alarm is related to single thresholds and single phases with three-phase load.
Index +32 = HB alarm storage is enabled.
Examples:
Setting index 11 (= 3+8) results in a continuous alarm reversed in state.
By setting index 17 (= 1+16) an alarm is triggered when the current is higher than the threshold for the OFF time, having a three-phase
configuration in which differentiated A.Hb_1, A.Hb_2, A.Hb_3 thresholds are desired in the individual phases.
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