31
MODINE CONTROLS SYSTEM MANUAL
ClassMate and SchoolMate Models
AIR74-525.1
Typical BMS - EMS - BAS System Variables
Carel Side BMS Side
Carel
Index
Description
Read/
Write
Variable Name
Data
Type
BACNet Lon Name SNVT
83 Current Hour R CURRENT-HOUR I AV1016
84 Current Minute R CURRENT-YEAR I AV1017
1 Supply Fan High Relay R supply_fan_high D BV1 nvosupply_fan_hi switch
2 Hot Gas Re-Heat Relay R HG_reheat D BV2 nvoHG_reheat switch
3 Reversing Valve Relay R Reversing_valve D BV3 nvoRev_val switch
4 Compressor Relay R comp_on D BV4 nvocomp_on switch
5 Compressor Capacity Solenoid Relay R Comp_CCS D BV5 nvoComp_CCS switch
6 *Supply Fan Relay R Supply_fan D BV6 nvoSupply_fan switch
7 Electric Heat Stage 1 Relay R Electric_ht1 D BV7 nvoElectric_ht1 switch
8 Electric Heat Stage 2 Relay R Electric_ht2 D BV8 nvoElectric_ht2 switch
9 Outside Air Damper Relay R OA_damper D BV9 nvoOA_damper switch
10 Door Switch Input R door_window_sw D BV10 nvodoor_win_sw switch
11 *Energy Recovery Wheel Relay R ERM_wheel D BV11 nvoERM_wheel switch
12 ERM Exhaust Air Fan Relay R EA_vent_fan D BV12 nvoEA_vent_fan switch
13 ERM Ventilation Fan R OA_vent_fan D BV13 nvoOA_vent_fan switch
14 Exhaust Fan Relay R Exhaust_fan_on D BV14 nvoExhaust_fan switch
15 General Alarm R General_Alarm D BV15 nvoGeneral_Alarm switch
16 Supervisor (BMS) On-Off R/W Superv_OnOff D BV16 nvo/nviSuperv_OnOff switch
20 Heartbeat sSignal from BMS R/W heartbeat D BV17 nvo/nviheartbeat NotSet
21 Condensate Digital Input NC R din_cond_float D BV18 nvodin_con_float switch
22 Freeze Stat Digital Input NO R din_freeze D BV19 nvodin_freeze switch
23
*Supply Fan Status Digital Input NC
(when running)
R din_supply_fan D BV20 nvodin_sup_fan switch
24 *Outside Air Fan Alarm Digital Input NO R din_oa_fan D BV21 nvodin_oa_fan switch
25 Filter Dirty Digital Input NO R din_filter D BV22 nvodin_filter switch
26 Occupied or Standby Digital Input NO R din_occupied D BV23 nvodin_occupied switch
27 Low Pressure Switch Digital Input R din_lp D BV24 nvodin_lp switch
28 High Pressure Switch Digital Input NO R din_hp D BV25 nvodin_hp switch
29 Alarm Reset by BMS R/W BMS_Reset D BV26 nvo/nviAL_Restet_BMS switch
30 Occupied Command from BMS Command R/W bms_occ D BV27 nvo/nvibms_occ switch
31 Unit in Dehumidification Mode R dehum D BV28 nvodehum switch
32 Unit in Defrost Mode R defrost_mode D BV29 nvodefrost_mode switch
40 Condensate Float Alarm R mal_cond_float D BV30 nvomal_con_float switch
41 Freeze Stat Alarm R mal_freeze_stat D BV31 nvomal_frze_stat switch
42 *Supply Fan Status Alarm R mal_sup_fan D BV32 nvomal_sup_fan switch
43 *Condenser Air Fan Alarm R mal_cond_fan D BV33 nvomal_cond_fan switch
44 Filter Dirty Alarm R mal_dirty_filter D BV34 nvomal_dirty_fil switch
45 Compressor Low Pressure Alarm R mal_low_pressure D BV35 nvomal_low_press switch
46 Compressor High Pressure Alarm R mal_high_pressure D BV36 nvomal_high_pres switch
47 Low Indoor Coil Temperature Alarm R mal_lo_coil_t D BV37 nvomal_lo_coil_t switch
48 Low Geo Water Temperature Alarm R mal_lo_gwo_t D BV38 nvomal_lo_gwo_t switch
49 Exhaust Fan Alarm R mal_exh_fan D BV39 nvomal_exh_fan switch
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