9 FUNCTIONS 800.238.7474 | www.macromatic.com | [email protected] OVERCURRENT, UNDERCURRENT & BAND (WINDOW) CMD Series cur r en t s en s i n g r elay s | d i n- ra il Operation: When the supply voltage V is applied, the output relays switch into on-position (yellow LED illuminated) and the start-up suppression (START) begins (green LED V/t flashes). Changes of the monitored current during this period do not affect the state of the output relay. After the startup suppression (START) has expired, the green LED will flash in an alternating pattern when an invalid MIN setting and MAX setting is selected (MIN must be below MAX). Overcurrent monitoring (OVER, OVER+LATCH): When the monitored current exceeds the value adjusted at the MAX-dial, the tripping delay (DELAY) begins (red LED MAX flashes). After the tripping delay (DELAY) has expired (red LED MAX illuminated), the output relays switch into off- position (yellow LED RELAY not illuminated). The output relays again switch into on-position (yellow LED illuminated), when the monitored current falls below the value adjusted at the MIN-dial (red LED MAX not illuminated). If the fault latch is activated (OVER+LATCH) and the monitored current remains above the MAX-value longer than the tripping delay, the output relays remain in the off-position even if the monitored current falls below the value adjusted at the MIN- dial. After resetting the latch (interrupting and re-applying the control voltage), the output relays switch into on-position and a new monitoring cycle begins with the delay start-up suppression (START). Undercurrent monitoring (UNDER, UNDER+LATCH): When the monitored current falls below the value adjusted at the MIN-dial, the tripping delay (DELAY) begins (red LED MIN flashes). After the tripping delay (DELAY) has expired (red LED MIN illuminated), the output relays switch into off-position (yellow LED not illuminated). The output relays again switch into on- position (yellow LED illuminated), when the monitored current exceeds the value adjusted at the MAX-dial. If the fault latch is activated (UNDER+LATCH) and the monitored current remains below the MIN-value longer than the tripping delay, the output relays remain in the off-position even if the monitored current exceeds the value adjusted at the MAX- dial. After resetting the latch (interrupting and re-applying the control voltage), the output relays switch into on-position and a new monitoring cycle begins with the delay start-up suppression (START). Band (Window) Function (BAND, BAND+LATCH): The output relays switch into on-position (yellow LED RELAY illuminated) when the monitored current exceeds the value adjusted at the MIN-dial. When the monitored current exceeds the value adjusted at the MAX-dial, the tripping delay (DELAY) begins (red LED MAX flashes). After the interval has expired (red LED MAX illuminated), the output relays switch into off-position (yellow LED RELAY not illuminated). The output relays again switch into on-position (yellow LED RELAY illuminated) when the monitored current falls below the value adjusted at the MAX- dial (red LED MAX not illuminated). When the monitored current falls below the value adjusted at the MIN-dial, the tripping delay (DELAY) begins again (red LED MIN flashes). After the delay has expired (red LED MIN illuminated), the output relays switch into off-position (yellow LED not illuminated). If the fault latch is activated (WIN+LATCH) and the monitored current remains below the MIN-value longer than the set interval of the tripping delay, the output relays remain in the off-position even if the monitored current exceeds the value adjusted at the MIN-dial. If the monitored current remains above the MAX-value longer than the set interval of the tripping delay, the output relays remain in the off- position even if the monitored current falls below the value adjusted at the MAX-dial. After resetting the latch (interrupting and re-applying the control voltage), the output relays switch into on-position and a new monitoring cycle begins with the delay of the start-up suppression (START). LATCH V V V LED V LATCH V LED V LATCH V LED V