diff --git a/library/axi_fan_control/axi_fan_control.v b/library/axi_fan_control/axi_fan_control.v
index caab1b20f..cde784c90 100644
--- a/library/axi_fan_control/axi_fan_control.v
+++ b/library/axi_fan_control/axi_fan_control.v
@@ -93,10 +93,10 @@ localparam        PWM_ONTIME_75           = PWM_PERIOD * 3 / 4;
 
 //tacho params
 localparam        TACHO_TOL_PERCENT       = 25;
-localparam        TACHO_T25               = 3200000; // 32 ms
-localparam        TACHO_T50               = 1280000; // 12.8 ms
-localparam        TACHO_T75               = 720000; // 7.2 ms
-localparam        TACHO_T100              = 640000;
+localparam        TACHO_T25               = 1470000; // 14.7 ms
+localparam        TACHO_T50               = 820000; // 8.2 ms
+localparam        TACHO_T75               = 480000; // 4.8 ms
+localparam        TACHO_T100              = 340000; // 3.4 ms
 localparam        TACHO_T25_TOL           = TACHO_T25 * TACHO_TOL_PERCENT / 100;
 localparam        TACHO_T50_TOL           = TACHO_T50 * TACHO_TOL_PERCENT / 100;
 localparam        TACHO_T75_TOL           = TACHO_T75 * TACHO_TOL_PERCENT / 100;
diff --git a/projects/adrv9009_zu11eg_som/carrier_bd.tcl b/projects/adrv9009_zu11eg_som/carrier_bd.tcl
index 35462dc44..00712a827 100644
--- a/projects/adrv9009_zu11eg_som/carrier_bd.tcl
+++ b/projects/adrv9009_zu11eg_som/carrier_bd.tcl
@@ -78,8 +78,11 @@ ad_connect sys_cpu_clk i2s_rx_dma/s_axis_aclk
 ad_connect sys_cpu_resetn i2s_rx_dma/s_axi_aresetn
 ad_connect sys_cpu_resetn i2s_rx_dma/m_dest_axi_aresetn
 
+# fan control
+
 ad_ip_instance axi_fan_control axi_fan_control_0
 ad_ip_parameter axi_fan_control_0 CONFIG.ID 1
+ad_ip_parameter axi_fan_control_0 CONFIG.PWM_FREQUENCY_HZ 1000
 
 ad_connect axi_fan_tacho_i axi_fan_control_0/tacho
 ad_connect axi_fan_pwm_o axi_fan_control_0/pwm